158774631 has 16 divisors (see below), whose sum is σ = 213734400. Its totient is φ = 104838048.

The previous prime is 158774617. The next prime is 158774641. The reversal of 158774631 is 136477851.

It is not a de Polignac number, because 158774631 - 2⁵ = 158774599 is a prime.

It is a super-2 number, since 2×158774631² = 50418766898372322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (158774641) 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 15 ways as a sum of consecutive naturals, for example, 163710 + ... + 164676.

It is an arithmetic number, because the mean of its divisors is an integer number (13358400).

Almost surely, 2^158774631 is an apocalyptic number.

158774631 is a deficient number, since it is larger than the sum of its proper divisors (54959769).

158774631 is a wasteful number, since it uses less digits than its factorization.

158774631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1438.

The product of its digits is 141120, while the sum is 42.

The square root of 158774631 is about 12600.5805818621. The cubic root of 158774631 is about 541.4940688537.

The spelling of 158774631 in words is "one hundred fifty-eight million, seven hundred seventy-four thousand, six hundred thirty-one".