2155932912 has 80 divisors (see below), whose sum is σ = 6388892672. Its totient is φ = 613681920.

The previous prime is 2155932881. The next prime is 2155932917. The reversal of 2155932912 is 2192395512.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2155932917) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 79218 + ... + 102894.

Almost surely, 2^2155932912 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2155932912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3194446336).

2155932912 is an abundant number, since it is smaller than the sum of its proper divisors (4232959760).

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

2155932912 is a wasteful number, since it uses less digits than its factorization.

2155932912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23966 (or 23960 counting only the distinct ones).

The product of its digits is 48600, while the sum is 39.

The square root of 2155932912 is about 46432.0246381740. The cubic root of 2155932912 is about 1291.8489824670.

The spelling of 2155932912 in words is "two billion, one hundred fifty-five million, nine hundred thirty-two thousand, nine hundred twelve".