190919459 has 2 divisors, whose sum is σ = 190919460. Its totient is φ = 190919458.

The previous prime is 190919437. The next prime is 190919473. The reversal of 190919459 is 954919091.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-190919459 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (190912459) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95459729 + 95459730.

It is an arithmetic number, because the mean of its divisors is an integer number (95459730).

Almost surely, 2^190919459 is an apocalyptic number.

190919459 is a deficient number, since it is larger than the sum of its proper divisors (1).

190919459 is an equidigital number, since it uses as much as digits as its factorization.

190919459 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 131220, while the sum is 47.

The square root of 190919459 is about 13817.3607827255. The cubic root of 190919459 is about 575.8155625327.

The spelling of 190919459 in words is "one hundred ninety million, nine hundred nineteen thousand, four hundred fifty-nine".