190897519 has 2 divisors, whose sum is σ = 190897520. Its totient is φ = 190897518.

The previous prime is 190897513. The next prime is 190897529. The reversal of 190897519 is 915798091.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-190897519 is a prime.

It is a super-2 number, since 2×190897519² = 72883725520710722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (190897513) 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, 95448759 + 95448760.

It is an arithmetic number, because the mean of its divisors is an integer number (95448760).

Almost surely, 2^190897519 is an apocalyptic number.

190897519 is a deficient number, since it is larger than the sum of its proper divisors (1).

190897519 is an equidigital number, since it uses as much as digits as its factorization.

190897519 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 204120, while the sum is 49.

The square root of 190897519 is about 13816.5668311632. The cubic root of 190897519 is about 575.7935045797.

The spelling of 190897519 in words is "one hundred ninety million, eight hundred ninety-seven thousand, five hundred nineteen".