158890087 has 2 divisors, whose sum is σ = 158890088. Its totient is φ = 158890086.

The previous prime is 158890079. The next prime is 158890111. The reversal of 158890087 is 780098851.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 158890087 - 2³ = 158890079 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (158890037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79445043 + 79445044.

It is an arithmetic number, because the mean of its divisors is an integer number (79445044).

Almost surely, 2^158890087 is an apocalyptic number.

158890087 is a deficient number, since it is larger than the sum of its proper divisors (1).

158890087 is an equidigital number, since it uses as much as digits as its factorization.

158890087 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 161280, while the sum is 46.

The square root of 158890087 is about 12605.1611255073. The cubic root of 158890087 is about 541.6252896309.

The spelling of 158890087 in words is "one hundred fifty-eight million, eight hundred ninety thousand, eighty-seven".