2188651144 has 16 divisors (see below), whose sum is σ = 4115552400. Its totient is φ = 1091170512.

The previous prime is 2188651139. The next prime is 2188651151. The reversal of 2188651144 is 4411568812.

It is a junction number, because it is equal to n+sod(n) for n = 2188651097 and 2188651106.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 391434 + ... + 396985.

It is an arithmetic number, because the mean of its divisors is an integer number (257222025).

Almost surely, 2^2188651144 is an apocalyptic number.

It is an amenable number.

2188651144 is a deficient number, since it is larger than the sum of its proper divisors (1926901256).

2188651144 is a wasteful number, since it uses less digits than its factorization.

2188651144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 788772 (or 788768 counting only the distinct ones).

The product of its digits is 61440, while the sum is 40.

The square root of 2188651144 is about 46783.0219631011. The cubic root of 2188651144 is about 1298.3511925196.

The spelling of 2188651144 in words is "two billion, one hundred eighty-eight million, six hundred fifty-one thousand, one hundred forty-four".