159668495 has 24 divisors (see below), whose sum is σ = 231123744. Its totient is φ = 103716288.

The previous prime is 159668477. The next prime is 159668497. The reversal of 159668495 is 594866951.

It is a happy number.

It is a Cunningham number, because it is equal to 12636²-1.

It is a de Polignac number, because none of the positive numbers 2^k-159668495 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (159668497) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6317 + ... + 18953.

It is an arithmetic number, because the mean of its divisors is an integer number (9630156).

Almost surely, 2^159668495 is an apocalyptic number.

159668495 is a deficient number, since it is larger than the sum of its proper divisors (71455249).

159668495 is a wasteful number, since it uses less digits than its factorization.

159668495 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12687 (or 12668 counting only the distinct ones).

The product of its digits is 2332800, while the sum is 53.

The square root of 159668495 is about 12635.9999604305. Note that the first 4 decimals coincide. The cubic root of 159668495 is about 542.5083294891.

The spelling of 159668495 in words is "one hundred fifty-nine million, six hundred sixty-eight thousand, four hundred ninety-five".