158923 has 2 divisors, whose sum is σ = 158924. Its totient is φ = 158922.

The previous prime is 158909. The next prime is 158927. The reversal of 158923 is 329851.

158923 is nontrivially palindromic in base 12.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 158923 - 2¹⁷ = 27851 is a prime.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 158891 and 158900.

It is not a weakly prime, because it can be changed into another prime (158927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79461 + 79462.

It is an arithmetic number, because the mean of its divisors is an integer number (79462).

2¹⁵⁸⁹²³ is an apocalyptic number.

158923 is a deficient number, since it is larger than the sum of its proper divisors (1).

158923 is an equidigital number, since it uses as much as digits as its factorization.

158923 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2160, while the sum is 28.

The square root of 158923 is about 398.6514768567. The cubic root of 158923 is about 54.1662685046.

It can be divided in two parts, 158 and 923, that added together give a triangular number (1081 = T₄₆).

The spelling of 158923 in words is "one hundred fifty-eight thousand, nine hundred twenty-three".