158887864 has 16 divisors (see below), whose sum is σ = 310867920. Its totient is φ = 75989760.

The previous prime is 158887837. The next prime is 158887867. The reversal of 158887864 is 468788851.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (158887867) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 431577 + ... + 431944.

It is an arithmetic number, because the mean of its divisors is an integer number (19429245).

Almost surely, 2^158887864 is an apocalyptic number.

It is an amenable number.

158887864 is a deficient number, since it is larger than the sum of its proper divisors (151980056).

158887864 is a wasteful number, since it uses less digits than its factorization.

158887864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 863550 (or 863546 counting only the distinct ones).

The product of its digits is 3440640, while the sum is 55.

The square root of 158887864 is about 12605.0729470321. The cubic root of 158887864 is about 541.6227636948.

The spelling of 158887864 in words is "one hundred fifty-eight million, eight hundred eighty-seven thousand, eight hundred sixty-four".