190640783 has 2 divisors, whose sum is σ = 190640784. Its totient is φ = 190640782.

The previous prime is 190640777. The next prime is 190640819. The reversal of 190640783 is 387046091.

It is a weak prime.

It is an emirp because it is prime and its reverse (387046091) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 190640783 - 2¹⁰ = 190639759 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (190640753) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95320391 + 95320392.

It is an arithmetic number, because the mean of its divisors is an integer number (95320392).

Almost surely, 2^190640783 is an apocalyptic number.

190640783 is a deficient number, since it is larger than the sum of its proper divisors (1).

190640783 is an equidigital number, since it uses as much as digits as its factorization.

190640783 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 190640783 is about 13807.2728299255. The cubic root of 190640783 is about 575.5352626325.

The spelling of 190640783 in words is "one hundred ninety million, six hundred forty thousand, seven hundred eighty-three".