158449923 has 12 divisors (see below), whose sum is σ = 229026720. Its totient is φ = 105561936.

The previous prime is 158449903. The next prime is 158449927. The reversal of 158449923 is 329944851.

158449923 is a `hidden beast` number, since 1 + 584 + 49 + 9 + 23 = 666.

It is not a de Polignac number, because 158449923 - 2⁵ = 158449891 is a prime.

It is not an unprimeable number, because it can be changed into a prime (158449927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10518 + ... + 20676.

It is an arithmetic number, because the mean of its divisors is an integer number (19085560).

Almost surely, 2^158449923 is an apocalyptic number.

158449923 is a deficient number, since it is larger than the sum of its proper divisors (70576797).

158449923 is a wasteful number, since it uses less digits than its factorization.

158449923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11898 (or 11895 counting only the distinct ones).

The product of its digits is 311040, while the sum is 45.

The square root of 158449923 is about 12587.6893431638. The cubic root of 158449923 is about 541.1246826947.

The spelling of 158449923 in words is "one hundred fifty-eight million, four hundred forty-nine thousand, nine hundred twenty-three".