158166207 has 6 divisors (see below), whose sum is σ = 228462312. Its totient is φ = 105444132.

The previous prime is 158166179. The next prime is 158166209. The reversal of 158166207 is 702661851.

158166207 is a `hidden beast` number, since 15 + 8 + 16 + 620 + 7 = 666.

It is not a de Polignac number, because 158166207 - 2⁶ = 158166143 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (158166209) 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, 8787003 + ... + 8787020.

It is an arithmetic number, because the mean of its divisors is an integer number (38077052).

Almost surely, 2^158166207 is an apocalyptic number.

158166207 is a deficient number, since it is larger than the sum of its proper divisors (70296105).

158166207 is a wasteful number, since it uses less digits than its factorization.

158166207 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17574029 (or 17574026 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The square root of 158166207 is about 12576.4147116736. The cubic root of 158166207 is about 540.8015154929.

The spelling of 158166207 in words is "one hundred fifty-eight million, one hundred sixty-six thousand, two hundred seven".