15190919 has 2 divisors, whose sum is σ = 15190920. Its totient is φ = 15190918.

The previous prime is 15190873. The next prime is 15190921. The reversal of 15190919 is 91909151.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15190919 is a prime.

It is a super-2 number, since 2×15190919² = 461528040129122, which contains 22 as substring.

Together with 15190921, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15190969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7595459 + 7595460.

It is an arithmetic number, because the mean of its divisors is an integer number (7595460).

Almost surely, 2^15190919 is an apocalyptic number.

15190919 is a deficient number, since it is larger than the sum of its proper divisors (1).

15190919 is an equidigital number, since it uses as much as digits as its factorization.

15190919 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3645, while the sum is 35.

The square root of 15190919 is about 3897.5529502497. The cubic root of 15190919 is about 247.6631254650.

The spelling of 15190919 in words is "fifteen million, one hundred ninety thousand, nine hundred nineteen".