2188634144 has 12 divisors (see below), whose sum is σ = 4308873534. Its totient is φ = 1094317056.

The previous prime is 2188634093. The next prime is 2188634153. The reversal of 2188634144 is 4414368812.

It can be written as a sum of positive squares in only one way, i.e., 2177155600 + 11478544 = 46660^2 + 3388^2 .

It is a super-2 number, since 2×2188634144² = 9580238832565225472, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34197377 + ... + 34197440.

Almost surely, 2^2188634144 is an apocalyptic number.

It is an amenable number.

2188634144 is a deficient number, since it is larger than the sum of its proper divisors (2120239390).

2188634144 is an equidigital number, since it uses as much as digits as its factorization.

2188634144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68394827 (or 68394819 counting only the distinct ones).

The product of its digits is 147456, while the sum is 41.

The square root of 2188634144 is about 46782.8402729035. The cubic root of 2188634144 is about 1298.3478309321.

The spelling of 2188634144 in words is "two billion, one hundred eighty-eight million, six hundred thirty-four thousand, one hundred forty-four".