190768387 has 2 divisors, whose sum is σ = 190768388. Its totient is φ = 190768386.

The previous prime is 190768313. The next prime is 190768397. The reversal of 190768387 is 783867091.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 190768387 - 2¹⁹ = 190244099 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 190768387.

It is not a weakly prime, because it can be changed into another prime (190768307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95384193 + 95384194.

It is an arithmetic number, because the mean of its divisors is an integer number (95384194).

Almost surely, 2^190768387 is an apocalyptic number.

190768387 is a deficient number, since it is larger than the sum of its proper divisors (1).

190768387 is an equidigital number, since it uses as much as digits as its factorization.

190768387 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 508032, while the sum is 49.

The square root of 190768387 is about 13811.8929549863. The cubic root of 190768387 is about 575.6636440854.

The spelling of 190768387 in words is "one hundred ninety million, seven hundred sixty-eight thousand, three hundred eighty-seven".