158993146 has 16 divisors (see below), whose sum is σ = 271943784. Its totient is φ = 69064704.

The previous prime is 158993137. The next prime is 158993171. The reversal of 158993146 is 641399851.

It can be written as a sum of positive squares in 4 ways, for example, as 99780121 + 59213025 = 9989^2 + 7695^2 .

It is a junction number, because it is equal to n+sod(n) for n = 158993096 and 158993105.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 179415 + ... + 180298.

Almost surely, 2^158993146 is an apocalyptic number.

158993146 is a deficient number, since it is larger than the sum of its proper divisors (112950638).

158993146 is a wasteful number, since it uses less digits than its factorization.

158993146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 359745.

The product of its digits is 233280, while the sum is 46.

The square root of 158993146 is about 12609.2484312111. The cubic root of 158993146 is about 541.7423669927.

The spelling of 158993146 in words is "one hundred fifty-eight million, nine hundred ninety-three thousand, one hundred forty-six".