158107917 has 12 divisors (see below), whose sum is σ = 231717920. Its totient is φ = 95822760.

The previous prime is 158107897. The next prime is 158107921. The reversal of 158107917 is 719701851.

It is not a de Polignac number, because 158107917 - 2¹² = 158103821 is a prime.

It is a super-2 number, since 2×158107917² = 49996226836157778, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (158107927) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 217417 + ... + 218142.

Almost surely, 2^158107917 is an apocalyptic number.

It is an amenable number.

158107917 is a deficient number, since it is larger than the sum of its proper divisors (73610003).

158107917 is a wasteful number, since it uses less digits than its factorization.

158107917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 435584 (or 435573 counting only the distinct ones).

The product of its (nonzero) digits is 17640, while the sum is 39.

The square root of 158107917 is about 12574.0970649983. The cubic root of 158107917 is about 540.7350723206.

The spelling of 158107917 in words is "one hundred fifty-eight million, one hundred seven thousand, nine hundred seventeen".