158642873 has 2 divisors, whose sum is σ = 158642874. Its totient is φ = 158642872.

The previous prime is 158642857. The next prime is 158642879. The reversal of 158642873 is 378246851.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 87459904 + 71182969 = 9352^2 + 8437^2 .

It is a cyclic number.

It is not a de Polignac number, because 158642873 - 2⁴ = 158642857 is a prime.

It is a super-2 number, since 2×158642873² = 50335122307388258, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (158642879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79321436 + 79321437.

It is an arithmetic number, because the mean of its divisors is an integer number (79321437).

Almost surely, 2^158642873 is an apocalyptic number.

It is an amenable number.

158642873 is a deficient number, since it is larger than the sum of its proper divisors (1).

158642873 is an equidigital number, since it uses as much as digits as its factorization.

158642873 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 322560, while the sum is 44.

The square root of 158642873 is about 12595.3512455985. The cubic root of 158642873 is about 541.3442423994.

The spelling of 158642873 in words is "one hundred fifty-eight million, six hundred forty-two thousand, eight hundred seventy-three".