158389988 has 12 divisors (see below), whose sum is σ = 277380012. Its totient is φ = 79138560.

The previous prime is 158389963. The next prime is 158389993. The reversal of 158389988 is 889983851.

158389988 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 2 ways, for example, as 87459904 + 70930084 = 9352^2 + 8422^2 .

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, 7445 + ... + 19292.

It is an arithmetic number, because the mean of its divisors is an integer number (23115001).

Almost surely, 2^158389988 is an apocalyptic number.

It is an amenable number.

158389988 is a deficient number, since it is larger than the sum of its proper divisors (118990024).

158389988 is a wasteful number, since it uses less digits than its factorization.

158389988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28222 (or 28220 counting only the distinct ones).

The product of its digits is 4976640, while the sum is 59.

The square root of 158389988 is about 12585.3084189463. The cubic root of 158389988 is about 541.0564457877.

The spelling of 158389988 in words is "one hundred fifty-eight million, three hundred eighty-nine thousand, nine hundred eighty-eight".