912985155 has 32 divisors (see below), whose sum is σ = 1653721920. Its totient is φ = 477734400.

The previous prime is 912985127. The next prime is 912985181. The reversal of 912985155 is 551589219.

912985155 is a `hidden beast` number, since 9 + 129 + 8 + 515 + 5 = 666.

It is not a de Polignac number, because 912985155 - 2⁶ = 912985091 is a prime.

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

It is a self number, because there is not a number n which added to its sum of digits gives 912985155.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 56646 + ... + 70955.

It is an arithmetic number, because the mean of its divisors is an integer number (51678810).

Almost surely, 2^912985155 is an apocalyptic number.

912985155 is a deficient number, since it is larger than the sum of its proper divisors (740736765).

912985155 is a wasteful number, since it uses less digits than its factorization.

912985155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127668 (or 127662 counting only the distinct ones).

The product of its digits is 162000, while the sum is 45.

The square root of 912985155 is about 30215.6442095812. The cubic root of 912985155 is about 970.1105747755.

The spelling of 912985155 in words is "nine hundred twelve million, nine hundred eighty-five thousand, one hundred fifty-five".