195240589 has 2 divisors, whose sum is σ = 195240590. Its totient is φ = 195240588.

The previous prime is 195240547. The next prime is 195240623. The reversal of 195240589 is 985042591.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 101344489 + 93896100 = 10067^2 + 9690^2 .

It is a cyclic number.

It is not a de Polignac number, because 195240589 - 2¹³ = 195232397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (195240389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97620294 + 97620295.

It is an arithmetic number, because the mean of its divisors is an integer number (97620295).

Almost surely, 2^195240589 is an apocalyptic number.

It is an amenable number.

195240589 is a deficient number, since it is larger than the sum of its proper divisors (1).

195240589 is an equidigital number, since it uses as much as digits as its factorization.

195240589 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 129600, while the sum is 43.

The square root of 195240589 is about 13972.8518563678. The cubic root of 195240589 is about 580.1273887846.

The spelling of 195240589 in words is "one hundred ninety-five million, two hundred forty thousand, five hundred eighty-nine".