818107938 has 40 divisors (see below), whose sum is σ = 1875815568. Its totient is φ = 266358456.

The previous prime is 818107919. The next prime is 818107943. The reversal of 818107938 is 839701818.

It is a super-2 number, since 2×818107938² = 1338601196437223688, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 818107893 and 818107902.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 51756 + ... + 65687.

Almost surely, 2^818107938 is an apocalyptic number.

818107938 is an abundant number, since it is smaller than the sum of its proper divisors (1057707630).

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

818107938 is a wasteful number, since it uses less digits than its factorization.

818107938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117500 (or 117491 counting only the distinct ones).

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

The square root of 818107938 is about 28602.5862117397. The cubic root of 818107938 is about 935.2697089561.

The spelling of 818107938 in words is "eight hundred eighteen million, one hundred seven thousand, nine hundred thirty-eight".