158116857 has 4 divisors (see below), whose sum is σ = 210822480. Its totient is φ = 105411236.

The previous prime is 158116853. The next prime is 158116877. The reversal of 158116857 is 758611851.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 158116857 - 2² = 158116853 is a prime.

It is not an unprimeable number, because it can be changed into a prime (158116853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26352807 + ... + 26352812.

It is an arithmetic number, because the mean of its divisors is an integer number (52705620).

Almost surely, 2^158116857 is an apocalyptic number.

It is an amenable number.

158116857 is a deficient number, since it is larger than the sum of its proper divisors (52705623).

158116857 is an equidigital number, since it uses as much as digits as its factorization.

158116857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52705622.

The product of its digits is 67200, while the sum is 42.

The square root of 158116857 is about 12574.4525526959. The cubic root of 158116857 is about 540.7452638416.

The spelling of 158116857 in words is "one hundred fifty-eight million, one hundred sixteen thousand, eight hundred fifty-seven".