189944414123 has 2 divisors, whose sum is σ = 189944414124. Its totient is φ = 189944414122.

The previous prime is 189944414069. The next prime is 189944414159. The reversal of 189944414123 is 321414449981.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 189944414123 - 2³⁶ = 121224937387 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (189944414173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94972207061 + 94972207062.

It is an arithmetic number, because the mean of its divisors is an integer number (94972207062).

Almost surely, 2^189944414123 is an apocalyptic number.

189944414123 is a deficient number, since it is larger than the sum of its proper divisors (1).

189944414123 is an equidigital number, since it uses as much as digits as its factorization.

189944414123 is an evil number, because the sum of its binary digits is even.

The product of its digits is 995328, while the sum is 50.

The spelling of 189944414123 in words is "one hundred eighty-nine billion, nine hundred forty-four million, four hundred fourteen thousand, one hundred twenty-three".