159169923 has 24 divisors (see below), whose sum is σ = 254934576. Its totient is φ = 94881600.

The previous prime is 159169891. The next prime is 159169939. The reversal of 159169923 is 329961951.

It is a happy number.

It is not a de Polignac number, because 159169923 - 2⁵ = 159169891 is a prime.

It is not an unprimeable number, because it can be changed into a prime (159169943) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7140 + ... + 19217.

It is an arithmetic number, because the mean of its divisors is an integer number (10622274).

Almost surely, 2^159169923 is an apocalyptic number.

159169923 is a deficient number, since it is larger than the sum of its proper divisors (95764653).

159169923 is a wasteful number, since it uses less digits than its factorization.

159169923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26435 (or 26432 counting only the distinct ones).

The product of its digits is 131220, while the sum is 45.

The square root of 159169923 is about 12616.2562989185. The cubic root of 159169923 is about 541.9430719110.

The spelling of 159169923 in words is "one hundred fifty-nine million, one hundred sixty-nine thousand, nine hundred twenty-three".