158378923 has 2 divisors, whose sum is σ = 158378924. Its totient is φ = 158378922.

The previous prime is 158378911. The next prime is 158378929. The reversal of 158378923 is 329873851.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 158378923 - 2¹⁷ = 158247851 is a prime.

It is not a weakly prime, because it can be changed into another prime (158378929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79189461 + 79189462.

It is an arithmetic number, because the mean of its divisors is an integer number (79189462).

Almost surely, 2^158378923 is an apocalyptic number.

158378923 is a deficient number, since it is larger than the sum of its proper divisors (1).

158378923 is an equidigital number, since it uses as much as digits as its factorization.

158378923 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 362880, while the sum is 46.

The square root of 158378923 is about 12584.8688113941. The cubic root of 158378923 is about 541.0438462350.

The spelling of 158378923 in words is "one hundred fifty-eight million, three hundred seventy-eight thousand, nine hundred twenty-three".