291125982 has 16 divisors (see below), whose sum is σ = 665430912. Its totient is φ = 83178840.

The previous prime is 291125963. The next prime is 291125993. The reversal of 291125982 is 289521192.

It is a self number, because there is not a number n which added to its sum of digits gives 291125982.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3465744 + ... + 3465827.

It is an arithmetic number, because the mean of its divisors is an integer number (41589432).

Almost surely, 2^291125982 is an apocalyptic number.

291125982 is an abundant number, since it is smaller than the sum of its proper divisors (374304930).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

291125982 is a wasteful number, since it uses less digits than its factorization.

291125982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6931583.

The product of its digits is 25920, while the sum is 39.

The square root of 291125982 is about 17062.4143074771. The cubic root of 291125982 is about 662.7661544580.

The spelling of 291125982 in words is "two hundred ninety-one million, one hundred twenty-five thousand, nine hundred eighty-two".