189013845173 has 2 divisors, whose sum is σ = 189013845174. Its totient is φ = 189013845172.

The previous prime is 189013845149. The next prime is 189013845257. The reversal of 189013845173 is 371548310981.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 178673599204 + 10340245969 = 422698^2 + 101687^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-189013845173 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (189013845473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94506922586 + 94506922587.

It is an arithmetic number, because the mean of its divisors is an integer number (94506922587).

Almost surely, 2^189013845173 is an apocalyptic number.

It is an amenable number.

189013845173 is a deficient number, since it is larger than the sum of its proper divisors (1).

189013845173 is an equidigital number, since it uses as much as digits as its factorization.

189013845173 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 725760, while the sum is 50.

The spelling of 189013845173 in words is "one hundred eighty-nine billion, thirteen million, eight hundred forty-five thousand, one hundred seventy-three".