190889773 has 2 divisors, whose sum is σ = 190889774. Its totient is φ = 190889772.

The previous prime is 190889759. The next prime is 190889813. The reversal of 190889773 is 377988091.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 146240649 + 44649124 = 12093^2 + 6682^2 .

It is a cyclic number.

It is not a de Polignac number, because 190889773 - 2⁹ = 190889261 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 190889773.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (190889173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95444886 + 95444887.

It is an arithmetic number, because the mean of its divisors is an integer number (95444887).

Almost surely, 2^190889773 is an apocalyptic number.

It is an amenable number.

190889773 is a deficient number, since it is larger than the sum of its proper divisors (1).

190889773 is an equidigital number, since it uses as much as digits as its factorization.

190889773 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 762048, while the sum is 52.

The square root of 190889773 is about 13816.2865126632. The cubic root of 190889773 is about 575.7857165322.

The spelling of 190889773 in words is "one hundred ninety million, eight hundred eighty-nine thousand, seven hundred seventy-three".