159340861 has 2 divisors, whose sum is σ = 159340862. Its totient is φ = 159340860.

The previous prime is 159340817. The next prime is 159340871. The reversal of 159340861 is 168043951.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 93973636 + 65367225 = 9694^2 + 8085^2 .

It is a cyclic number.

It is not a de Polignac number, because 159340861 - 2⁷ = 159340733 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 159340861.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (159340871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79670430 + 79670431.

It is an arithmetic number, because the mean of its divisors is an integer number (79670431).

Almost surely, 2^159340861 is an apocalyptic number.

It is an amenable number.

159340861 is a deficient number, since it is larger than the sum of its proper divisors (1).

159340861 is an equidigital number, since it uses as much as digits as its factorization.

159340861 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25920, while the sum is 37.

The square root of 159340861 is about 12623.0289946589. The cubic root of 159340861 is about 542.1370062094.

The spelling of 159340861 in words is "one hundred fifty-nine million, three hundred forty thousand, eight hundred sixty-one".