18158107 has 6 divisors (see below), whose sum is σ = 19959044. Its totient is φ = 16507260.

The previous prime is 18158099. The next prime is 18158113. The reversal of 18158107 is 70185181.

It is not a de Polignac number, because 18158107 - 2³ = 18158099 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18158137) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 74913 + ... + 75154.

Almost surely, 2^18158107 is an apocalyptic number.

18158107 is a deficient number, since it is larger than the sum of its proper divisors (1800937).

18158107 is a wasteful number, since it uses less digits than its factorization.

18158107 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150089 (or 150078 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 31.

The square root of 18158107 is about 4261.2330375139. The cubic root of 18158107 is about 262.8392324669.

The spelling of 18158107 in words is "eighteen million, one hundred fifty-eight thousand, one hundred seven".