158971886 has 4 divisors (see below), whose sum is σ = 238457832. Its totient is φ = 79485942.

The previous prime is 158971877. The next prime is 158971961. The reversal of 158971886 is 688179851.

158971886 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39742970 + ... + 39742973.

It is an arithmetic number, because the mean of its divisors is an integer number (59614458).

Almost surely, 2^158971886 is an apocalyptic number.

158971886 is a deficient number, since it is larger than the sum of its proper divisors (79485946).

158971886 is an equidigital number, since it uses as much as digits as its factorization.

158971886 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79485945.

The product of its digits is 967680, while the sum is 53.

The square root of 158971886 is about 12608.4053710213. The cubic root of 158971886 is about 541.7182192932.

The spelling of 158971886 in words is "one hundred fifty-eight million, nine hundred seventy-one thousand, eight hundred eighty-six".