2188276456 has 8 divisors (see below), whose sum is σ = 4103018370. Its totient is φ = 1094138224.

The previous prime is 2188276439. The next prime is 2188276463. The reversal of 2188276456 is 6546728812.

It can be written as a sum of positive squares in only one way, i.e., 1435652100 + 752624356 = 37890^2 + 27434^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 136767271 + ... + 136767286.

Almost surely, 2^2188276456 is an apocalyptic number.

It is an amenable number.

2188276456 is a deficient number, since it is larger than the sum of its proper divisors (1914741914).

2188276456 is a wasteful number, since it uses less digits than its factorization.

2188276456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 273534563 (or 273534559 counting only the distinct ones).

The product of its digits is 1290240, while the sum is 49.

The square root of 2188276456 is about 46779.0172620161. The cubic root of 2188276456 is about 1298.2770975112.

The spelling of 2188276456 in words is "two billion, one hundred eighty-eight million, two hundred seventy-six thousand, four hundred fifty-six".