158897923 has 2 divisors, whose sum is σ = 158897924. Its totient is φ = 158897922.

The previous prime is 158897903. The next prime is 158897951. The reversal of 158897923 is 329798851.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 158897923 - 2⁹ = 158897411 is a prime.

It is not a weakly prime, because it can be changed into another prime (158897903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79448961 + 79448962.

It is an arithmetic number, because the mean of its divisors is an integer number (79448962).

Almost surely, 2^158897923 is an apocalyptic number.

158897923 is a deficient number, since it is larger than the sum of its proper divisors (1).

158897923 is an equidigital number, since it uses as much as digits as its factorization.

158897923 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1088640, while the sum is 52.

The square root of 158897923 is about 12605.4719467381. The cubic root of 158897923 is about 541.6341932827.

The spelling of 158897923 in words is "one hundred fifty-eight million, eight hundred ninety-seven thousand, nine hundred twenty-three".