957980891 has 16 divisors (see below), whose sum is σ = 1107470784. Its totient is φ = 811689984.

The previous prime is 957980887. The next prime is 957980927. The reversal of 957980891 is 198089759.

It is a happy number.

957980891 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 957980891 - 2² = 957980887 is a prime.

It is not an unprimeable number, because it can be changed into a prime (957980851) 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, 341105 + ... + 343901.

It is an arithmetic number, because the mean of its divisors is an integer number (69216924).

Almost surely, 2^957980891 is an apocalyptic number.

957980891 is a deficient number, since it is larger than the sum of its proper divisors (149489893).

957980891 is a wasteful number, since it uses less digits than its factorization.

957980891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3350.

The product of its (nonzero) digits is 1632960, while the sum is 56.

The square root of 957980891 is about 30951.2663876617. The cubic root of 957980891 is about 985.7927399903.

The spelling of 957980891 in words is "nine hundred fifty-seven million, nine hundred eighty thousand, eight hundred ninety-one".