159040823 has 2 divisors, whose sum is σ = 159040824. Its totient is φ = 159040822.

The previous prime is 159040807. The next prime is 159040829. The reversal of 159040823 is 328040951.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 159040823 - 2⁴ = 159040807 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 159040823.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (159040829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79520411 + 79520412.

It is an arithmetic number, because the mean of its divisors is an integer number (79520412).

Almost surely, 2^159040823 is an apocalyptic number.

159040823 is a deficient number, since it is larger than the sum of its proper divisors (1).

159040823 is an equidigital number, since it uses as much as digits as its factorization.

159040823 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 159040823 is about 12611.1388462740. The cubic root of 159040823 is about 541.7965120301.

The spelling of 159040823 in words is "one hundred fifty-nine million, forty thousand, eight hundred twenty-three".