2188872166 has 32 divisors (see below), whose sum is σ = 3627475488. Its totient is φ = 984149760.

The previous prime is 2188872151. The next prime is 2188872199. The reversal of 2188872166 is 6612788812.

2188872166 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×2188872166² = 9582322718179063112, which contains 22 as substring.

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, 1078845 + ... + 1080871.

It is an arithmetic number, because the mean of its divisors is an integer number (113358609).

Almost surely, 2^2188872166 is an apocalyptic number.

2188872166 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

2188872166 is a deficient number, since it is larger than the sum of its proper divisors (1438603322).

2188872166 is a wasteful number, since it uses less digits than its factorization.

2188872166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3096.

The product of its digits is 516096, while the sum is 49.

The square root of 2188872166 is about 46785.3841065776. The cubic root of 2188872166 is about 1298.3948959240.

The spelling of 2188872166 in words is "two billion, one hundred eighty-eight million, eight hundred seventy-two thousand, one hundred sixty-six".