2187198086 has 16 divisors (see below), whose sum is σ = 3357683280. Its totient is φ = 1068206880.

The previous prime is 2187198037. The next prime is 2187198107. The reversal of 2187198086 is 6808917812.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40505 + ... + 77556.

It is an arithmetic number, because the mean of its divisors is an integer number (209855205).

Almost surely, 2^2187198086 is an apocalyptic number.

2187198086 is a deficient number, since it is larger than the sum of its proper divisors (1170485194).

2187198086 is a wasteful number, since it uses less digits than its factorization.

2187198086 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118279.

The product of its (nonzero) digits is 387072, while the sum is 50.

The square root of 2187198086 is about 46767.4896268765. The cubic root of 2187198086 is about 1298.0638013183.

The spelling of 2187198086 in words is "two billion, one hundred eighty-seven million, one hundred ninety-eight thousand, eighty-six".