190474890391 has 2 divisors, whose sum is σ = 190474890392. Its totient is φ = 190474890390.

The previous prime is 190474890377. The next prime is 190474890433. The reversal of 190474890391 is 193098474091.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 190474890391 - 2¹¹ = 190474888343 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (190474890301) 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, 95237445195 + 95237445196.

It is an arithmetic number, because the mean of its divisors is an integer number (95237445196).

Almost surely, 2^190474890391 is an apocalyptic number.

190474890391 is a deficient number, since it is larger than the sum of its proper divisors (1).

190474890391 is an equidigital number, since it uses as much as digits as its factorization.

190474890391 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1959552, while the sum is 55.

The spelling of 190474890391 in words is "one hundred ninety billion, four hundred seventy-four million, eight hundred ninety thousand, three hundred ninety-one".