115881619 has 12 divisors (see below), whose sum is σ = 135027984. Its totient is φ = 99159984.

The previous prime is 115881617. The next prime is 115881631. The reversal of 115881619 is 916188511.

It is not a de Polignac number, because 115881619 - 2¹ = 115881617 is a prime.

It is a super-2 number, since 2×115881619² = 26857099244122322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (115881617) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 33997 + ... + 37249.

It is an arithmetic number, because the mean of its divisors is an integer number (11252332).

Almost surely, 2^115881619 is an apocalyptic number.

115881619 is a deficient number, since it is larger than the sum of its proper divisors (19146365).

115881619 is an equidigital number, since it uses as much as digits as its factorization.

115881619 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3994 (or 3987 counting only the distinct ones).

The product of its digits is 17280, while the sum is 40.

The square root of 115881619 is about 10764.8325114699. The cubic root of 115881619 is about 487.5339361868.

The spelling of 115881619 in words is "one hundred fifteen million, eight hundred eighty-one thousand, six hundred nineteen".