158651968 has 14 divisors (see below), whose sum is σ = 314825126. Its totient is φ = 79325952.

The previous prime is 158651951. The next prime is 158651989. The reversal of 158651968 is 869156851.

It can be written as a sum of positive squares in only one way, i.e., 100160064 + 58491904 = 10008^2 + 7648^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1239405 + ... + 1239532.

It is an arithmetic number, because the mean of its divisors is an integer number (22487509).

Almost surely, 2^158651968 is an apocalyptic number.

It is an amenable number.

158651968 is a deficient number, since it is larger than the sum of its proper divisors (156173158).

158651968 is an equidigital number, since it uses as much as digits as its factorization.

158651968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2478949 (or 2478939 counting only the distinct ones).

The product of its digits is 518400, while the sum is 49.

The square root of 158651968 is about 12595.7122863298. The cubic root of 158651968 is about 541.3545872949.

The spelling of 158651968 in words is "one hundred fifty-eight million, six hundred fifty-one thousand, nine hundred sixty-eight".