2115694386 has 96 divisors (see below), whose sum is σ = 5192957952. Its totient is φ = 617984640.

The previous prime is 2115694379. The next prime is 2115694429. The reversal of 2115694386 is 6834965112.

2115694386 is a `hidden beast` number, since 2 + 1 + 1 + 569 + 4 + 3 + 86 = 666.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 381711 + ... + 387213.

It is an arithmetic number, because the mean of its divisors is an integer number (54093312).

Almost surely, 2^2115694386 is an apocalyptic number.

2115694386 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 2115694386, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2596478976).

2115694386 is an abundant number, since it is smaller than the sum of its proper divisors (3077263566).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2115694386 is a wasteful number, since it uses less digits than its factorization.

2115694386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5608 (or 5605 counting only the distinct ones).

The product of its digits is 311040, while the sum is 45.

The square root of 2115694386 is about 45996.6779887418. The cubic root of 2115694386 is about 1283.7613940706.

The spelling of 2115694386 in words is "two billion, one hundred fifteen million, six hundred ninety-four thousand, three hundred eighty-six".