2115187194 has 16 divisors (see below), whose sum is σ = 4271447232. Its totient is φ = 698216928.

The previous prime is 2115187169. The next prime is 2115187213. The reversal of 2115187194 is 4917815112.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1710699 + ... + 1711934.

It is an arithmetic number, because the mean of its divisors is an integer number (266965452).

Almost surely, 2^2115187194 is an apocalyptic number.

2115187194 is an abundant number, since it is smaller than the sum of its proper divisors (2156260038).

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

2115187194 is a wasteful number, since it uses less digits than its factorization.

2115187194 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3422741.

The product of its digits is 20160, while the sum is 39.

The square root of 2115187194 is about 45991.1643035921. The cubic root of 2115187194 is about 1283.6588011898.

It can be divided in two parts, 21151 and 87194, that added together give a triangular number (108345 = T₄₆₅).

The spelling of 2115187194 in words is "two billion, one hundred fifteen million, one hundred eighty-seven thousand, one hundred ninety-four".