115691419 has 2 divisors, whose sum is σ = 115691420. Its totient is φ = 115691418.

The previous prime is 115691417. The next prime is 115691453. The reversal of 115691419 is 914196511.

It is a weak prime.

It is an emirp because it is prime and its reverse (914196511) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 115691419 - 2¹ = 115691417 is a prime.

It is a super-2 number, since 2×115691419² = 26769008860467122, which contains 22 as substring.

Together with 115691417, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (115691413) 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, 57845709 + 57845710.

It is an arithmetic number, because the mean of its divisors is an integer number (57845710).

Almost surely, 2^115691419 is an apocalyptic number.

115691419 is a deficient number, since it is larger than the sum of its proper divisors (1).

115691419 is an equidigital number, since it uses as much as digits as its factorization.

115691419 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9720, while the sum is 37.

The square root of 115691419 is about 10755.9945611738. The cubic root of 115691419 is about 487.2670553972.

The spelling of 115691419 in words is "one hundred fifteen million, six hundred ninety-one thousand, four hundred nineteen".