159597659 has 4 divisors (see below), whose sum is σ = 171874416. Its totient is φ = 147320904.

The previous prime is 159597619. The next prime is 159597677. The reversal of 159597659 is 956795951.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 956795951 = 14627 ⋅65413.

It is a cyclic number.

It is not a de Polignac number, because 159597659 - 2²⁴ = 142820443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (159597619) 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, 6138359 + ... + 6138384.

It is an arithmetic number, because the mean of its divisors is an integer number (42968604).

Almost surely, 2^159597659 is an apocalyptic number.

159597659 is a deficient number, since it is larger than the sum of its proper divisors (12276757).

159597659 is a wasteful number, since it uses less digits than its factorization.

159597659 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12276756.

The product of its digits is 3827250, while the sum is 56.

The square root of 159597659 is about 12633.1967055057. The cubic root of 159597659 is about 542.4280907328.

The spelling of 159597659 in words is "one hundred fifty-nine million, five hundred ninety-seven thousand, six hundred fifty-nine".