115819691 has 8 divisors (see below), whose sum is σ = 132066144. Its totient is φ = 100621440.

The previous prime is 115819679. The next prime is 115819699. The reversal of 115819691 is 196918511.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 115819691 - 2¹⁴ = 115803307 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (115819699) 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, 261815 + ... + 262256.

It is an arithmetic number, because the mean of its divisors is an integer number (16508268).

Almost surely, 2^115819691 is an apocalyptic number.

115819691 is a deficient number, since it is larger than the sum of its proper divisors (16246453).

115819691 is a wasteful number, since it uses less digits than its factorization.

115819691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 524101.

The product of its digits is 19440, while the sum is 41.

The square root of 115819691 is about 10761.9557237521. The cubic root of 115819691 is about 487.4470734564.

The spelling of 115819691 in words is "one hundred fifteen million, eight hundred nineteen thousand, six hundred ninety-one".