641883589 has 2 divisors, whose sum is σ = 641883590. Its totient is φ = 641883588.

The previous prime is 641883581. The next prime is 641883601. The reversal of 641883589 is 985388146.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 592532964 + 49350625 = 24342^2 + 7025^2 .

It is a cyclic number.

It is not a de Polignac number, because 641883589 - 2³ = 641883581 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (641883581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 320941794 + 320941795.

It is an arithmetic number, because the mean of its divisors is an integer number (320941795).

Almost surely, 2^641883589 is an apocalyptic number.

It is an amenable number.

641883589 is a deficient number, since it is larger than the sum of its proper divisors (1).

641883589 is an equidigital number, since it uses as much as digits as its factorization.

641883589 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1658880, while the sum is 52.

The square root of 641883589 is about 25335.4216266475. The cubic root of 641883589 is about 862.6184791102.

The spelling of 641883589 in words is "six hundred forty-one million, eight hundred eighty-three thousand, five hundred eighty-nine".