159340865 has 4 divisors (see below), whose sum is σ = 191209044. Its totient is φ = 127472688.

The previous prime is 159340861. The next prime is 159340871. The reversal of 159340865 is 568043951.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 568043951 = 1249 ⋅454799.

It can be written as a sum of positive squares in 2 ways, for example, as 112869376 + 46471489 = 10624^2 + 6817^2 .

It is a cyclic number.

It is not a de Polignac number, because 159340865 - 2² = 159340861 is a prime.

It is a super-2 number, since 2×159340865² = 50779022517896450, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (159340861) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15934082 + ... + 15934091.

It is an arithmetic number, because the mean of its divisors is an integer number (47802261).

Almost surely, 2^159340865 is an apocalyptic number.

It is an amenable number.

159340865 is a deficient number, since it is larger than the sum of its proper divisors (31868179).

159340865 is an equidigital number, since it uses as much as digits as its factorization.

159340865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31868178.

The product of its (nonzero) digits is 129600, while the sum is 41.

The square root of 159340865 is about 12623.0291530995. The cubic root of 159340865 is about 542.1370107459.

The spelling of 159340865 in words is "one hundred fifty-nine million, three hundred forty thousand, eight hundred sixty-five".