159492891 has 12 divisors (see below), whose sum is σ = 217725288. Its totient is φ = 103852224.

The previous prime is 159492889. The next prime is 159492937. The reversal of 159492891 is 198294951.

It is not a de Polignac number, because 159492891 - 2¹ = 159492889 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 159492891.

It is not an unprimeable number, because it can be changed into a prime (159492811) 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 in 11 ways as a sum of consecutive naturals, for example, 8830 + ... + 19923.

It is an arithmetic number, because the mean of its divisors is an integer number (18143774).

Almost surely, 2^159492891 is an apocalyptic number.

159492891 is a deficient number, since it is larger than the sum of its proper divisors (58232397).

159492891 is an equidigital number, since it uses as much as digits as its factorization.

159492891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28842 (or 28799 counting only the distinct ones).

The product of its digits is 233280, while the sum is 48.

The square root of 159492891 is about 12629.0494891738. The cubic root of 159492891 is about 542.3093723124.

The spelling of 159492891 in words is "one hundred fifty-nine million, four hundred ninety-two thousand, eight hundred ninety-one".