1891876056 has 64 divisors (see below), whose sum is σ = 5689862400. Its totient is φ = 512085888.

The previous prime is 1891876039. The next prime is 1891876057. The reversal of 1891876056 is 6506781981.

It is a super-2 number, since 2×1891876056² = 7158390022532230272, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1891876057) 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, 293155 + ... + 299538.

It is an arithmetic number, because the mean of its divisors is an integer number (88904100).

Almost surely, 2^1891876056 is an apocalyptic number.

It is an amenable number.

1891876056 is an abundant number, since it is smaller than the sum of its proper divisors (3797986344).

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

1891876056 is a wasteful number, since it uses less digits than its factorization.

1891876056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 592728 (or 592724 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 51.

The square root of 1891876056 is about 43495.7015807309. The cubic root of 1891876056 is about 1236.7945425978.

The spelling of 1891876056 in words is "one billion, eight hundred ninety-one million, eight hundred seventy-six thousand, fifty-six".