159659790 has 128 divisors (see below), whose sum is σ = 423014400. Its totient is φ = 38438400.

The previous prime is 159659789. The next prime is 159659791. The reversal of 159659790 is 97956951.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (159659789) and next prime (159659791).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (159659791) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1580740 + ... + 1580840.

It is an arithmetic number, because the mean of its divisors is an integer number (3304800).

Almost surely, 2^159659790 is an apocalyptic number.

159659790 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 159659790, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (211507200).

159659790 is an abundant number, since it is smaller than the sum of its proper divisors (263354610).

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

159659790 is a wasteful number, since it uses less digits than its factorization.

159659790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242.

The product of its (nonzero) digits is 765450, while the sum is 51.

The square root of 159659790 is about 12635.6555033762. The cubic root of 159659790 is about 542.4984702683.

The spelling of 159659790 in words is "one hundred fifty-nine million, six hundred fifty-nine thousand, seven hundred ninety".