42597895189 has 2 divisors, whose sum is σ = 42597895190. Its totient is φ = 42597895188.

The previous prime is 42597895187. The next prime is 42597895237. The reversal of 42597895189 is 98159879524.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29911702500 + 12686192689 = 172950^2 + 112633^2 .

It is a cyclic number.

It is not a de Polignac number, because 42597895189 - 2¹ = 42597895187 is a prime.

Together with 42597895187, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42597895187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21298947594 + 21298947595.

It is an arithmetic number, because the mean of its divisors is an integer number (21298947595).

Almost surely, 2^42597895189 is an apocalyptic number.

It is an amenable number.

42597895189 is a deficient number, since it is larger than the sum of its proper divisors (1).

42597895189 is an equidigital number, since it uses as much as digits as its factorization.

42597895189 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 65318400, while the sum is 67.

The spelling of 42597895189 in words is "forty-two billion, five hundred ninety-seven million, eight hundred ninety-five thousand, one hundred eighty-nine".