159197669 has 2 divisors, whose sum is σ = 159197670. Its totient is φ = 159197668.

The previous prime is 159197659. The next prime is 159197681. The reversal of 159197669 is 966791951.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 124032769 + 35164900 = 11137^2 + 5930^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-159197669 is a prime.

It is a super-2 number, since 2×159197669² = 50687795630067122, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 159197669.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (159197659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79598834 + 79598835.

It is an arithmetic number, because the mean of its divisors is an integer number (79598835).

Almost surely, 2^159197669 is an apocalyptic number.

It is an amenable number.

159197669 is a deficient number, since it is larger than the sum of its proper divisors (1).

159197669 is an equidigital number, since it uses as much as digits as its factorization.

159197669 is an evil number, because the sum of its binary digits is even.

The product of its digits is 918540, while the sum is 53.

The square root of 159197669 is about 12617.3558640470. The cubic root of 159197669 is about 541.9745600183.

The spelling of 159197669 in words is "one hundred fifty-nine million, one hundred ninety-seven thousand, six hundred sixty-nine".