2123344188 has 72 divisors (see below), whose sum is σ = 6138568800. Its totient is φ = 606228480.

The previous prime is 2123344177. The next prime is 2123344253. The reversal of 2123344188 is 8814433212.

It is a happy number.

2123344188 is a `hidden beast` number, since 2 + 1 + 233 + 4 + 418 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 522388 + ... + 526436.

It is an arithmetic number, because the mean of its divisors is an integer number (85257900).

Almost surely, 2^2123344188 is an apocalyptic number.

2123344188 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

2123344188 is an abundant number, since it is smaller than the sum of its proper divisors (4015224612).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2123344188 is a wasteful number, since it uses less digits than its factorization.

2123344188 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6147 (or 6142 counting only the distinct ones).

The product of its digits is 36864, while the sum is 36.

The square root of 2123344188 is about 46079.7589837447. The cubic root of 2123344188 is about 1285.3067823699.

The spelling of 2123344188 in words is "two billion, one hundred twenty-three million, three hundred forty-four thousand, one hundred eighty-eight".