158308091 has 2 divisors, whose sum is σ = 158308092. Its totient is φ = 158308090.

The previous prime is 158308043. The next prime is 158308121. The reversal of 158308091 is 190803851.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 158308091 - 2⁶ = 158308027 is a prime.

It is a super-2 number, since 2×158308091² = 50122903352128562, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (158308001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79154045 + 79154046.

It is an arithmetic number, because the mean of its divisors is an integer number (79154046).

Almost surely, 2^158308091 is an apocalyptic number.

158308091 is a deficient number, since it is larger than the sum of its proper divisors (1).

158308091 is an equidigital number, since it uses as much as digits as its factorization.

158308091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8640, while the sum is 35.

The square root of 158308091 is about 12582.0543235197. The cubic root of 158308091 is about 540.9631769735.

The spelling of 158308091 in words is "one hundred fifty-eight million, three hundred eight thousand, ninety-one".