159868692 has 18 divisors (see below), whose sum is σ = 404112618. Its totient is φ = 53289552.

The previous prime is 159868673. The next prime is 159868729. The reversal of 159868692 is 296868951.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 156650256 + 3218436 = 12516^2 + 1794^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2220363 + ... + 2220434.

It is an arithmetic number, because the mean of its divisors is an integer number (22450701).

Almost surely, 2^159868692 is an apocalyptic number.

159868692 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

159868692 is an abundant number, since it is smaller than the sum of its proper divisors (244243926).

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

159868692 is a wasteful number, since it uses less digits than its factorization.

159868692 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4440807 (or 4440802 counting only the distinct ones).

The product of its digits is 1866240, while the sum is 54.

The square root of 159868692 is about 12643.9191708900. The cubic root of 159868692 is about 542.7349723624.

The spelling of 159868692 in words is "one hundred fifty-nine million, eight hundred sixty-eight thousand, six hundred ninety-two".