159681630 has 16 divisors (see below), whose sum is σ = 383235984. Its totient is φ = 42581760.

The previous prime is 159681623. The next prime is 159681637. The reversal of 159681630 is 36186951.

It is an interprime number because it is at equal distance from previous prime (159681623) and next prime (159681637).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (159681637) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2661331 + ... + 2661390.

It is an arithmetic number, because the mean of its divisors is an integer number (23952249).

Almost surely, 2^159681630 is an apocalyptic number.

159681630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

159681630 is an abundant number, since it is smaller than the sum of its proper divisors (223554354).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

159681630 is a wasteful number, since it uses less digits than its factorization.

159681630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5322731.

The product of its (nonzero) digits is 38880, while the sum is 39.

The square root of 159681630 is about 12636.5196949160. The cubic root of 159681630 is about 542.5232054179.

The spelling of 159681630 in words is "one hundred fifty-nine million, six hundred eighty-one thousand, six hundred thirty".