159990635 has 20 divisors (see below), whose sum is σ = 223990368. Its totient is φ = 109699632.

The previous prime is 159990629. The next prime is 159990637. The reversal of 159990635 is 536099951.

It is not a de Polignac number, because 159990635 - 2¹⁰ = 159989611 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 159990635.

It is not an unprimeable number, because it can be changed into a prime (159990637) 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 19 ways as a sum of consecutive naturals, for example, 5342 + ... + 18668.

Almost surely, 2^159990635 is an apocalyptic number.

159990635 is a deficient number, since it is larger than the sum of its proper divisors (63999733).

159990635 is an frugal number, since it uses more digits than its factorization.

159990635 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13360 (or 13339 counting only the distinct ones).

The product of its (nonzero) digits is 328050, while the sum is 47.

The square root of 159990635 is about 12648.7404511279. The cubic root of 159990635 is about 542.8729312286.

The spelling of 159990635 in words is "one hundred fifty-nine million, nine hundred ninety thousand, six hundred thirty-five".