2157540976 has 20 divisors (see below), whose sum is σ = 4315082944. Its totient is φ = 1043971200.

The previous prime is 2157540961. The next prime is 2157540989. The reversal of 2157540976 is 6790457512.

2157540976 is an admirable number.

It is a congruent number.

It is an unprimeable number.

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, 2174445 + ... + 2175436.

Almost surely, 2^2157540976 is an apocalyptic number.

It is an amenable number.

2157540976 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

2157540976 is a wasteful number, since it uses less digits than its factorization.

2157540976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4349920 (or 4349914 counting only the distinct ones).

The product of its (nonzero) digits is 529200, while the sum is 46.

The square root of 2157540976 is about 46449.3377347837. The cubic root of 2157540976 is about 1292.1700901036.

The spelling of 2157540976 in words is "two billion, one hundred fifty-seven million, five hundred forty thousand, nine hundred seventy-six".