2156358960 has 120 divisors (see below), whose sum is σ = 8276330400. Its totient is φ = 492880896.

The previous prime is 2156358959. The next prime is 2156359027. The reversal of 2156358960 is 698536512.

2156358960 is a `hidden beast` number, since 2 + 1 + 5 + 6 + 3 + 589 + 60 = 666.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 208885 + ... + 218964.

It is an arithmetic number, because the mean of its divisors is an integer number (68969420).

Almost surely, 2^2156358960 is an apocalyptic number.

2156358960 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2156358960 is an abundant number, since it is smaller than the sum of its proper divisors (6119971440).

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

2156358960 is a wasteful number, since it uses less digits than its factorization.

2156358960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 427875 (or 427866 counting only the distinct ones).

The product of its (nonzero) digits is 388800, while the sum is 45.

The square root of 2156358960 is about 46436.6122795365. The cubic root of 2156358960 is about 1291.9340737703.

The spelling of 2156358960 in words is "two billion, one hundred fifty-six million, three hundred fifty-eight thousand, nine hundred sixty".