3644850747 has 4 divisors (see below), whose sum is σ = 4859801000. Its totient is φ = 2429900496.

The previous prime is 3644850743. The next prime is 3644850749. The reversal of 3644850747 is 7470584463.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 3644850747 - 2² = 3644850743 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3644850696 and 3644850705.

It is not an unprimeable number, because it can be changed into a prime (3644850743) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 607475122 + ... + 607475127.

It is an arithmetic number, because the mean of its divisors is an integer number (1214950250).

Almost surely, 2^3644850747 is an apocalyptic number.

3644850747 is a deficient number, since it is larger than the sum of its proper divisors (1214950253).

3644850747 is a wasteful number, since it uses less digits than its factorization.

3644850747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1214950252.

The product of its (nonzero) digits is 2257920, while the sum is 48.

The square root of 3644850747 is about 60372.5993063078. The cubic root of 3644850747 is about 1538.9573460400.

The spelling of 3644850747 in words is "three billion, six hundred forty-four million, eight hundred fifty thousand, seven hundred forty-seven".