159869780 has 96 divisors (see below), whose sum is σ = 404490240. Its totient is φ = 51891840.

The previous prime is 159869771. The next prime is 159869791. The reversal of 159869780 is 87968951.

159869780 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 421631 + ... + 422009.

It is an arithmetic number, because the mean of its divisors is an integer number (4213440).

Almost surely, 2^159869780 is an apocalyptic number.

159869780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 159869780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (202245120).

159869780 is an abundant number, since it is smaller than the sum of its proper divisors (244620460).

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

159869780 is a wasteful number, since it uses less digits than its factorization.

159869780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 549 (or 547 counting only the distinct ones).

The product of its (nonzero) digits is 1088640, while the sum is 53.

The square root of 159869780 is about 12643.9621954512. The cubic root of 159869780 is about 542.7362035693.

The spelling of 159869780 in words is "one hundred fifty-nine million, eight hundred sixty-nine thousand, seven hundred eighty".