159195990 has 64 divisors (see below), whose sum is σ = 406342656. Its totient is φ = 39777792.

The previous prime is 159195937. The next prime is 159196039. The reversal of 159195990 is 99591951.

It is a happy number.

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, 143779 + ... + 144881.

It is an arithmetic number, because the mean of its divisors is an integer number (6349104).

Almost surely, 2^159195990 is an apocalyptic number.

159195990 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 159195990, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (203171328).

159195990 is an abundant number, since it is smaller than the sum of its proper divisors (247146666).

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

159195990 is a wasteful number, since it uses less digits than its factorization.

159195990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1413.

The product of its (nonzero) digits is 164025, while the sum is 48.

The square root of 159195990 is about 12617.2893285365. The cubic root of 159195990 is about 541.9726546754.

The spelling of 159195990 in words is "one hundred fifty-nine million, one hundred ninety-five thousand, nine hundred ninety".