158191984 has 20 divisors (see below), whose sum is σ = 317066760. Its totient is φ = 76368320.

The previous prime is 158191973. The next prime is 158191993. The reversal of 158191984 is 489191851.

158191984 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 170002 + ... + 170929.

It is an arithmetic number, because the mean of its divisors is an integer number (15853338).

Almost surely, 2^158191984 is an apocalyptic number.

It is an amenable number.

158191984 is an abundant number, since it is smaller than the sum of its proper divisors (158874776).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

158191984 is a wasteful number, since it uses less digits than its factorization.

158191984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340968 (or 340962 counting only the distinct ones).

The product of its digits is 103680, while the sum is 46.

The square root of 158191984 is about 12577.4394850462. The cubic root of 158191984 is about 540.8308927826.

The spelling of 158191984 in words is "one hundred fifty-eight million, one hundred ninety-one thousand, nine hundred eighty-four".