159007681 has 16 divisors (see below), whose sum is σ = 193708800. Its totient is φ = 127411200.

The previous prime is 159007661. The next prime is 159007733. The reversal of 159007681 is 186700951.

It is a de Polignac number, because none of the positive numbers 2^k-159007681 is a prime.

It is a super-2 number, since 2×159007681² = 50566885233995522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 159007681.

It is not an unprimeable number, because it can be changed into a prime (159007621) 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 15 ways as a sum of consecutive naturals, for example, 13545 + ... + 22393.

It is an arithmetic number, because the mean of its divisors is an integer number (12106800).

Almost surely, 2^159007681 is an apocalyptic number.

It is an amenable number.

159007681 is a deficient number, since it is larger than the sum of its proper divisors (34701119).

159007681 is a wasteful number, since it uses less digits than its factorization.

159007681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9024.

The product of its (nonzero) digits is 15120, while the sum is 37.

The square root of 159007681 is about 12609.8247807018. The cubic root of 159007681 is about 541.7588750112.

The spelling of 159007681 in words is "one hundred fifty-nine million, seven thousand, six hundred eighty-one".