158190887 has 2 divisors, whose sum is σ = 158190888. Its totient is φ = 158190886.

The previous prime is 158190883. The next prime is 158190959. The reversal of 158190887 is 788091851.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 158190887 - 2² = 158190883 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (158190883) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79095443 + 79095444.

It is an arithmetic number, because the mean of its divisors is an integer number (79095444).

Almost surely, 2^158190887 is an apocalyptic number.

158190887 is a deficient number, since it is larger than the sum of its proper divisors (1).

158190887 is an equidigital number, since it uses as much as digits as its factorization.

158190887 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 161280, while the sum is 47.

The square root of 158190887 is about 12577.3958751404. The cubic root of 158190887 is about 540.8296426289.

The spelling of 158190887 in words is "one hundred fifty-eight million, one hundred ninety thousand, eight hundred eighty-seven".