907818138 has 32 divisors (see below), whose sum is σ = 2123553600. Its totient is φ = 286679088.

The previous prime is 907818137. The next prime is 907818221. The reversal of 907818138 is 831818709.

It is a junction number, because it is equal to n+sod(n) for n = 907818093 and 907818102.

It is not an unprimeable number, because it can be changed into a prime (907818137) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 441381 + ... + 443432.

It is an arithmetic number, because the mean of its divisors is an integer number (66361050).

Almost surely, 2^907818138 is an apocalyptic number.

907818138 is an abundant number, since it is smaller than the sum of its proper divisors (1215735462).

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

907818138 is a wasteful number, since it uses less digits than its factorization.

907818138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 884843 (or 884837 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 45.

The square root of 907818138 is about 30130.0205443010. The cubic root of 907818138 is about 968.2770057645.

The spelling of 907818138 in words is "nine hundred seven million, eight hundred eighteen thousand, one hundred thirty-eight".