159899137 has 4 divisors (see below), whose sum is σ = 160090560. Its totient is φ = 159707716.

The previous prime is 159899107. The next prime is 159899143. The reversal of 159899137 is 731998951.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 159899137 - 2⁷ = 159899009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (159899107) 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 3 ways as a sum of consecutive naturals, for example, 94453 + ... + 96130.

It is an arithmetic number, because the mean of its divisors is an integer number (40022640).

Almost surely, 2^159899137 is an apocalyptic number.

It is an amenable number.

159899137 is a deficient number, since it is larger than the sum of its proper divisors (191423).

159899137 is an equidigital number, since it uses as much as digits as its factorization.

159899137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191422.

The product of its digits is 612360, while the sum is 52.

The square root of 159899137 is about 12645.1230519912. The cubic root of 159899137 is about 542.7694225461.

The spelling of 159899137 in words is "one hundred fifty-nine million, eight hundred ninety-nine thousand, one hundred thirty-seven".