957993881 has 8 divisors (see below), whose sum is σ = 1034074440. Its totient is φ = 882254592.

The previous prime is 957993871. The next prime is 957993887. The reversal of 957993881 is 188399759.

It can be written as a sum of positive squares in 4 ways, for example, as 21939856 + 936054025 = 4684^2 + 30595^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 957993881 - 2¹⁴ = 957977497 is a prime.

It is a super-2 number, since 2×957993881² = 1835504552066884322, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 957993881.

It is not an unprimeable number, because it can be changed into a prime (957993887) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79466 + ... + 90723.

It is an arithmetic number, because the mean of its divisors is an integer number (129259305).

Almost surely, 2^957993881 is an apocalyptic number.

It is an amenable number.

957993881 is a deficient number, since it is larger than the sum of its proper divisors (76080559).

957993881 is a wasteful number, since it uses less digits than its factorization.

957993881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170635.

The product of its digits is 4898880, while the sum is 59.

The square root of 957993881 is about 30951.4762329683. The cubic root of 957993881 is about 985.7971956776.

The spelling of 957993881 in words is "nine hundred fifty-seven million, nine hundred ninety-three thousand, eight hundred eighty-one".