159667992 has 72 divisors (see below), whose sum is σ = 472799340. Its totient is φ = 48276480.

The previous prime is 159667951. The next prime is 159667999. The reversal of 159667992 is 299766951.

It is a tau number, because it is divible by the number of its divisors (72).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (159667999) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 355384 + ... + 355832.

Almost surely, 2^159667992 is an apocalyptic number.

159667992 is a gapful number since it is divisible by the number (12) 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 159667992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (236399670).

159667992 is an abundant number, since it is smaller than the sum of its proper divisors (313131348).

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

159667992 is a wasteful number, since it uses less digits than its factorization.

159667992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 921 (or 465 counting only the distinct ones).

The product of its digits is 1837080, while the sum is 54.

The square root of 159667992 is about 12635.9800569643. The cubic root of 159667992 is about 542.5077598046.

The spelling of 159667992 in words is "one hundred fifty-nine million, six hundred sixty-seven thousand, nine hundred ninety-two".