2155885982 has 16 divisors (see below), whose sum is σ = 3331879920. Its totient is φ = 1045716672.

The previous prime is 2155885943. The next prime is 2155886003. The reversal of 2155885982 is 2895885512.

It is a Harshad number since it is a multiple of its sum of digits (53).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 104828 + ... + 123695.

It is an arithmetic number, because the mean of its divisors is an integer number (208242495).

Almost surely, 2^2155885982 is an apocalyptic number.

2155885982 is a deficient number, since it is larger than the sum of its proper divisors (1175993938).

2155885982 is a wasteful number, since it uses less digits than its factorization.

2155885982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228667.

The product of its digits is 2304000, while the sum is 53.

The square root of 2155885982 is about 46431.5192730111. The cubic root of 2155885982 is about 1291.8396088122.

The spelling of 2155885982 in words is "two billion, one hundred fifty-five million, eight hundred eighty-five thousand, nine hundred eighty-two".