189944414173 has 2 divisors, whose sum is σ = 189944414174. Its totient is φ = 189944414172.

The previous prime is 189944414159. The next prime is 189944414249. The reversal of 189944414173 is 371414449981.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 107766445284 + 82177968889 = 328278^2 + 286667^2 .

It is a cyclic number.

It is not a de Polignac number, because 189944414173 - 2⁹ = 189944413661 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (189944414123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94972207086 + 94972207087.

It is an arithmetic number, because the mean of its divisors is an integer number (94972207087).

Almost surely, 2^189944414173 is an apocalyptic number.

It is an amenable number.

189944414173 is a deficient number, since it is larger than the sum of its proper divisors (1).

189944414173 is an equidigital number, since it uses as much as digits as its factorization.

189944414173 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3483648, while the sum is 55.

The spelling of 189944414173 in words is "one hundred eighty-nine billion, nine hundred forty-four million, four hundred fourteen thousand, one hundred seventy-three".