158813965 has 16 divisors (see below), whose sum is σ = 199749888. Its totient is φ = 120985216.

The previous prime is 158813933. The next prime is 158813971. The reversal of 158813965 is 569318851.

It is a cyclic number.

It is not a de Polignac number, because 158813965 - 2⁵ = 158813933 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23832 + ... + 29758.

It is an arithmetic number, because the mean of its divisors is an integer number (12484368).

Almost surely, 2^158813965 is an apocalyptic number.

It is an amenable number.

158813965 is a deficient number, since it is larger than the sum of its proper divisors (40935923).

158813965 is a wasteful number, since it uses less digits than its factorization.

158813965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6188.

The product of its digits is 259200, while the sum is 46.

The square root of 158813965 is about 12602.1412863053. The cubic root of 158813965 is about 541.5387808017.

The spelling of 158813965 in words is "one hundred fifty-eight million, eight hundred thirteen thousand, nine hundred sixty-five".