158913091 has 2 divisors, whose sum is σ = 158913092. Its totient is φ = 158913090.

The previous prime is 158913077. The next prime is 158913107. The reversal of 158913091 is 190319851.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 158913091 - 2¹¹ = 158911043 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 158913091.

It is not a weakly prime, because it can be changed into another prime (158913031) 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, 79456545 + 79456546.

It is an arithmetic number, because the mean of its divisors is an integer number (79456546).

Almost surely, 2^158913091 is an apocalyptic number.

158913091 is a deficient number, since it is larger than the sum of its proper divisors (1).

158913091 is an equidigital number, since it uses as much as digits as its factorization.

158913091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9720, while the sum is 37.

The square root of 158913091 is about 12606.0735758602. The cubic root of 158913091 is about 541.6514270847.

The spelling of 158913091 in words is "one hundred fifty-eight million, nine hundred thirteen thousand, ninety-one".