190394663 has 2 divisors, whose sum is σ = 190394664. Its totient is φ = 190394662.

The previous prime is 190394647. The next prime is 190394707. The reversal of 190394663 is 366493091.

190394663 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is an emirp because it is prime and its reverse (366493091) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 190394663 - 2⁴ = 190394647 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 190394663.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (190394063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95197331 + 95197332.

It is an arithmetic number, because the mean of its divisors is an integer number (95197332).

Almost surely, 2^190394663 is an apocalyptic number.

190394663 is a deficient number, since it is larger than the sum of its proper divisors (1).

190394663 is an equidigital number, since it uses as much as digits as its factorization.

190394663 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 104976, while the sum is 41.

The square root of 190394663 is about 13798.3572572970. The cubic root of 190394663 is about 575.2874811976.

The spelling of 190394663 in words is "one hundred ninety million, three hundred ninety-four thousand, six hundred sixty-three".