1957765957 has 16 divisors (see below), whose sum is σ = 2344792320. Its totient is φ = 1598205312.

The previous prime is 1957765939. The next prime is 1957765967. The reversal of 1957765957 is 7595677591.

It is a cyclic number.

It is not a de Polignac number, because 1957765957 - 2⁷ = 1957765829 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1957765895 and 1957765904.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1957765967) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11419 + ... + 63607.

It is an arithmetic number, because the mean of its divisors is an integer number (146549520).

Almost surely, 2^1957765957 is an apocalyptic number.

It is an amenable number.

1957765957 is a deficient number, since it is larger than the sum of its proper divisors (387026363).

1957765957 is a wasteful number, since it uses less digits than its factorization.

1957765957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52452.

The product of its digits is 20837250, while the sum is 61.

The square root of 1957765957 is about 44246.6491047627. The cubic root of 1957765957 is about 1250.9892876680.

The spelling of 1957765957 in words is "one billion, nine hundred fifty-seven million, seven hundred sixty-five thousand, nine hundred fifty-seven".