158923169 has 8 divisors (see below), whose sum is σ = 166275072. Its totient is φ = 151608160.

The previous prime is 158923153. The next prime is 158923187. The reversal of 158923169 is 961329851.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 158923169 - 2⁴ = 158923153 is a prime.

It is a super-2 number, since 2×158923169² = 50513147290005122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (158923139) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 212 + ... + 17829.

It is an arithmetic number, because the mean of its divisors is an integer number (20784384).

Almost surely, 2^158923169 is an apocalyptic number.

It is an amenable number.

158923169 is a deficient number, since it is larger than the sum of its proper divisors (7351903).

158923169 is a wasteful number, since it uses less digits than its factorization.

158923169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18447.

The product of its digits is 116640, while the sum is 44.

The square root of 158923169 is about 12606.4732974770. The cubic root of 158923169 is about 541.6628770491.

The spelling of 158923169 in words is "one hundred fifty-eight million, nine hundred twenty-three thousand, one hundred sixty-nine".