115916919 has 8 divisors (see below), whose sum is σ = 156673392. Its totient is φ = 76219200.

The previous prime is 115916861. The next prime is 115916923. The reversal of 115916919 is 919619511.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 115916919 - 2¹⁵ = 115884151 is a prime.

It is a super-2 number, since 2×115916919² = 26873464220905122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115916419) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 264432 + ... + 264869.

It is an arithmetic number, because the mean of its divisors is an integer number (19584174).

Almost surely, 2^115916919 is an apocalyptic number.

115916919 is a deficient number, since it is larger than the sum of its proper divisors (40756473).

115916919 is an equidigital number, since it uses as much as digits as its factorization.

115916919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 529377.

The product of its digits is 21870, while the sum is 42.

The square root of 115916919 is about 10766.4719848240. The cubic root of 115916919 is about 487.5834355548.

The spelling of 115916919 in words is "one hundred fifteen million, nine hundred sixteen thousand, nine hundred nineteen".