158331968 has 14 divisors (see below), whose sum is σ = 314190126. Its totient is φ = 79165952.

The previous prime is 158331961. The next prime is 158332001. The reversal of 158331968 is 869133851.

158331968 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., 99840064 + 58491904 = 9992^2 + 7648^2 .

It is not an unprimeable number, because it can be changed into a prime (158331961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1236905 + ... + 1237032.

Almost surely, 2^158331968 is an apocalyptic number.

It is an amenable number.

158331968 is a deficient number, since it is larger than the sum of its proper divisors (155858158).

158331968 is an equidigital number, since it uses as much as digits as its factorization.

158331968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2473949 (or 2473939 counting only the distinct ones).

The product of its digits is 155520, while the sum is 44.

The square root of 158331968 is about 12583.0031391556. The cubic root of 158331968 is about 540.9903727375.

The spelling of 158331968 in words is "one hundred fifty-eight million, three hundred thirty-one thousand, nine hundred sixty-eight".