252638875189 has 2 divisors, whose sum is σ = 252638875190. Its totient is φ = 252638875188.

The previous prime is 252638875171. The next prime is 252638875211. The reversal of 252638875189 is 981578836252.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 233909584164 + 18729291025 = 483642^2 + 136855^2 .

It is a cyclic number.

It is not a de Polignac number, because 252638875189 - 2²⁵ = 252605320757 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 252638875189.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (252638875109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126319437594 + 126319437595.

It is an arithmetic number, because the mean of its divisors is an integer number (126319437595).

Almost surely, 2^252638875189 is an apocalyptic number.

It is an amenable number.

252638875189 is a deficient number, since it is larger than the sum of its proper divisors (1).

252638875189 is an equidigital number, since it uses as much as digits as its factorization.

252638875189 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 58060800, while the sum is 64.

The spelling of 252638875189 in words is "two hundred fifty-two billion, six hundred thirty-eight million, eight hundred seventy-five thousand, one hundred eighty-nine".