1650765061 has 4 divisors (see below), whose sum is σ = 1800834624. Its totient is φ = 1500695500.

The previous prime is 1650765047. The next prime is 1650765121. The reversal of 1650765061 is 1605670561.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1605670561 = 11 ⋅145970051.

It is a cyclic number.

It is not a de Polignac number, because 1650765061 - 2⁷ = 1650764933 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1650765061.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1650765461) 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, 75034765 + ... + 75034786.

It is an arithmetic number, because the mean of its divisors is an integer number (450208656).

Almost surely, 2^1650765061 is an apocalyptic number.

1650765061 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1650765061 is a deficient number, since it is larger than the sum of its proper divisors (150069563).

1650765061 is a wasteful number, since it uses less digits than its factorization.

1650765061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150069562.

The product of its (nonzero) digits is 37800, while the sum is 37.

The square root of 1650765061 is about 40629.6081817189. The cubic root of 1650765061 is about 1181.8483578795.

The spelling of 1650765061 in words is "one billion, six hundred fifty million, seven hundred sixty-five thousand, sixty-one".