158189992 has 8 divisors (see below), whose sum is σ = 296606250. Its totient is φ = 79094992.

The previous prime is 158189971. The next prime is 158190047. The reversal of 158189992 is 299981851.

158189992 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 96943716 + 61246276 = 9846^2 + 7826^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9886867 + ... + 9886882.

Almost surely, 2^158189992 is an apocalyptic number.

It is an amenable number.

158189992 is a deficient number, since it is larger than the sum of its proper divisors (138416258).

158189992 is a wasteful number, since it uses less digits than its factorization.

158189992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19773755 (or 19773751 counting only the distinct ones).

The product of its digits is 466560, while the sum is 52.

The square root of 158189992 is about 12577.3602953879. The cubic root of 158189992 is about 540.8286226725.

The spelling of 158189992 in words is "one hundred fifty-eight million, one hundred eighty-nine thousand, nine hundred ninety-two".