2156986160 has 40 divisors (see below), whose sum is σ = 5731421856. Its totient is φ = 739537920.

The previous prime is 2156986031. The next prime is 2156986171. The reversal of 2156986160 is 616896512.

It is a tau number, because it is divible by the number of its divisors (40).

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 7 ways as a sum of consecutive naturals, for example, 1925321 + ... + 1926440.

Almost surely, 2^2156986160 is an apocalyptic number.

2156986160 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2156986160 is an abundant number, since it is smaller than the sum of its proper divisors (3574435696).

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

2156986160 is a wasteful number, since it uses less digits than its factorization.

2156986160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3851781 (or 3851775 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 44.

The square root of 2156986160 is about 46443.3650804935. The cubic root of 2156986160 is about 1292.0593192291.

The spelling of 2156986160 in words is "two billion, one hundred fifty-six million, nine hundred eighty-six thousand, one hundred sixty".