159278013 has 12 divisors (see below), whose sum is σ = 240071520. Its totient is φ = 101568456.

The previous prime is 159278011. The next prime is 159278017. The reversal of 159278013 is 310872951.

It is not a de Polignac number, because 159278013 - 2¹ = 159278011 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (159278011) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 384523 + ... + 384936.

It is an arithmetic number, because the mean of its divisors is an integer number (20005960).

Almost surely, 2^159278013 is an apocalyptic number.

It is an amenable number.

159278013 is a deficient number, since it is larger than the sum of its proper divisors (80793507).

159278013 is a wasteful number, since it uses less digits than its factorization.

159278013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 769488 (or 769485 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 36.

The square root of 159278013 is about 12620.5393307893. The cubic root of 159278013 is about 542.0657193949.

The spelling of 159278013 in words is "one hundred fifty-nine million, two hundred seventy-eight thousand, thirteen".