18350975907 has 24 divisors (see below), whose sum is σ = 30617673840. Its totient is φ = 10467578880.

The previous prime is 18350975899. The next prime is 18350975911. The reversal of 18350975907 is 70957905381.

18350975907 is a `hidden beast` number, since 1 + 83 + 509 + 7 + 59 + 0 + 7 = 666.

It is not a de Polignac number, because 18350975907 - 2³ = 18350975899 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18350975947) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5450182 + ... + 5453547.

It is an arithmetic number, because the mean of its divisors is an integer number (1275736410).

Almost surely, 2^18350975907 is an apocalyptic number.

18350975907 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

18350975907 is a deficient number, since it is larger than the sum of its proper divisors (12266697933).

18350975907 is a wasteful number, since it uses less digits than its factorization.

18350975907 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10903763 (or 10903760 counting only the distinct ones).

The product of its (nonzero) digits is 2381400, while the sum is 54.

The spelling of 18350975907 in words is "eighteen billion, three hundred fifty million, nine hundred seventy-five thousand, nine hundred seven".