2156876316 has 72 divisors (see below), whose sum is σ = 6504881040. Its totient is φ = 616248864.

The previous prime is 2156876291. The next prime is 2156876317. The reversal of 2156876316 is 6136786512.

2156876316 is a `hidden beast` number, since 2 + 1 + 5 + 6 + 8 + 7 + 631 + 6 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2156876317) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 198495 + ... + 209078.

It is an arithmetic number, because the mean of its divisors is an integer number (90345570).

Almost surely, 2^2156876316 is an apocalyptic number.

It is an amenable number.

2156876316 is an abundant number, since it is smaller than the sum of its proper divisors (4348004724).

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

2156876316 is a wasteful number, since it uses less digits than its factorization.

2156876316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 407600 (or 407585 counting only the distinct ones).

The product of its digits is 362880, while the sum is 45.

The square root of 2156876316 is about 46442.1825068547. The cubic root of 2156876316 is about 1292.0373862537.

The spelling of 2156876316 in words is "two billion, one hundred fifty-six million, eight hundred seventy-six thousand, three hundred sixteen".