158233978 has 16 divisors (see below), whose sum is σ = 278590464. Its totient is φ = 65981520.

The previous prime is 158233963. The next prime is 158233979. The reversal of 158233978 is 879332851.

It is not an unprimeable number, because it can be changed into a prime (158233979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 152218 + ... + 153253.

It is an arithmetic number, because the mean of its divisors is an integer number (17411904).

Almost surely, 2^158233978 is an apocalyptic number.

158233978 is a deficient number, since it is larger than the sum of its proper divisors (120356486).

158233978 is a wasteful number, since it uses less digits than its factorization.

158233978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 305517.

The product of its digits is 362880, while the sum is 46.

The square root of 158233978 is about 12579.1087919614. The cubic root of 158233978 is about 540.8787452770.

The spelling of 158233978 in words is "one hundred fifty-eight million, two hundred thirty-three thousand, nine hundred seventy-eight".