641092159 has 2 divisors, whose sum is σ = 641092160. Its totient is φ = 641092158.

The previous prime is 641092139. The next prime is 641092169. The reversal of 641092159 is 951290146.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 641092159 - 2²⁵ = 607537727 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (641092139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 320546079 + 320546080.

It is an arithmetic number, because the mean of its divisors is an integer number (320546080).

Almost surely, 2^641092159 is an apocalyptic number.

641092159 is a deficient number, since it is larger than the sum of its proper divisors (1).

641092159 is an equidigital number, since it uses as much as digits as its factorization.

641092159 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 19440, while the sum is 37.

The square root of 641092159 is about 25319.7977677548. The cubic root of 641092159 is about 862.2638026896.

The spelling of 641092159 in words is "six hundred forty-one million, ninety-two thousand, one hundred fifty-nine".