190444946789 has 2 divisors, whose sum is σ = 190444946790. Its totient is φ = 190444946788.

The previous prime is 190444946777. The next prime is 190444946819. The reversal of 190444946789 is 987649444091.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 140823820225 + 49621126564 = 375265^2 + 222758^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-190444946789 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (190444946719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95222473394 + 95222473395.

It is an arithmetic number, because the mean of its divisors is an integer number (95222473395).

Almost surely, 2^190444946789 is an apocalyptic number.

It is an amenable number.

190444946789 is a deficient number, since it is larger than the sum of its proper divisors (1).

190444946789 is an equidigital number, since it uses as much as digits as its factorization.

190444946789 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 62705664, while the sum is 65.

The spelling of 190444946789 in words is "one hundred ninety billion, four hundred forty-four million, nine hundred forty-six thousand, seven hundred eighty-nine".