159684136 has 8 divisors (see below), whose sum is σ = 299407770. Its totient is φ = 79842064.

The previous prime is 159684079. The next prime is 159684137. The reversal of 159684136 is 631486951.

It can be written as a sum of positive squares in only one way, i.e., 112487236 + 47196900 = 10606^2 + 6870^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 159684092 and 159684101.

It is not an unprimeable number, because it can be changed into a prime (159684137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9980251 + ... + 9980266.

Almost surely, 2^159684136 is an apocalyptic number.

It is an amenable number.

159684136 is a deficient number, since it is larger than the sum of its proper divisors (139723634).

159684136 is a wasteful number, since it uses less digits than its factorization.

159684136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19960523 (or 19960519 counting only the distinct ones).

The product of its digits is 155520, while the sum is 43.

The square root of 159684136 is about 12636.6188515758. The cubic root of 159684136 is about 542.5260434735.

The spelling of 159684136 in words is "one hundred fifty-nine million, six hundred eighty-four thousand, one hundred thirty-six".