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3768076649 = 21291769881
BaseRepresentation
bin1110000010011000…
…0100100101101001
3100201121022010102102
43200212010211221
530204111423044
61421522543145
7162243060131
oct34046044551
910647263372
103768076649
111663a87837
12891b07ab5
1348086ab6c
1427a621ac1
15170c1224e
hexe0984969

3768076649 has 4 divisors (see below), whose sum is σ = 3769848660. Its totient is φ = 3766304640.

The previous prime is 3768076603. The next prime is 3768076661. The reversal of 3768076649 is 9466708673.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9466708673 = 83114056731.

It can be written as a sum of positive squares in 2 ways, for example, as 2318904025 + 1449172624 = 48155^2 + 38068^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-3768076649 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3768076594 and 3768076603.

It is not an unprimeable number, because it can be changed into a prime (3768076549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 882812 + ... + 887069.

It is an arithmetic number, because the mean of its divisors is an integer number (942462165).

Almost surely, 23768076649 is an apocalyptic number.

It is an amenable number.

3768076649 is a deficient number, since it is larger than the sum of its proper divisors (1772011).

3768076649 is a wasteful number, since it uses less digits than its factorization.

3768076649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1772010.

The product of its (nonzero) digits is 9144576, while the sum is 56.

The square root of 3768076649 is about 61384.6613495587. The cubic root of 3768076649 is about 1556.1086236544.

The spelling of 3768076649 in words is "three billion, seven hundred sixty-eight million, seventy-six thousand, six hundred forty-nine".

Divisors: 1 2129 1769881 3768076649