115869615 has 16 divisors (see below), whose sum is σ = 187932768. Its totient is φ = 60950016.

The previous prime is 115869583. The next prime is 115869641. The reversal of 115869615 is 516968511.

It is not a de Polignac number, because 115869615 - 2⁵ = 115869583 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51814 + ... + 54003.

It is an arithmetic number, because the mean of its divisors is an integer number (11745798).

Almost surely, 2^115869615 is an apocalyptic number.

115869615 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

115869615 is a deficient number, since it is larger than the sum of its proper divisors (72063153).

115869615 is a wasteful number, since it uses less digits than its factorization.

115869615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105898.

The product of its digits is 64800, while the sum is 42.

The square root of 115869615 is about 10764.2749407473. The cubic root of 115869615 is about 487.5171013067.

The spelling of 115869615 in words is "one hundred fifteen million, eight hundred sixty-nine thousand, six hundred fifteen".