2155768160 has 96 divisors (see below), whose sum is σ = 6268352832. Its totient is φ = 682260480.

The previous prime is 2155768159. The next prime is 2155768187. The reversal of 2155768160 is 618675512.

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 15 ways as a sum of consecutive naturals, for example, 59471 + ... + 88590.

It is an arithmetic number, because the mean of its divisors is an integer number (65295342).

Almost surely, 2^2155768160 is an apocalyptic number.

2155768160 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2155768160 is an abundant number, since it is smaller than the sum of its proper divisors (4112584672).

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

2155768160 is a wasteful number, since it uses less digits than its factorization.

2155768160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148096 (or 148088 counting only the distinct ones).

The product of its (nonzero) digits is 100800, while the sum is 41.

The square root of 2155768160 is about 46430.2504839248. The cubic root of 2155768160 is about 1291.8160748064.

The spelling of 2155768160 in words is "two billion, one hundred fifty-five million, seven hundred sixty-eight thousand, one hundred sixty".