2188388892 has 24 divisors (see below), whose sum is σ = 5111083152. Its totient is φ = 728771200.

The previous prime is 2188388837. The next prime is 2188388927. The reversal of 2188388892 is 2988838812.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 73209 + ... + 98672.

It is an arithmetic number, because the mean of its divisors is an integer number (212961798).

Almost surely, 2^2188388892 is an apocalyptic number.

It is an amenable number.

2188388892 is an abundant number, since it is smaller than the sum of its proper divisors (2922694260).

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

2188388892 is a wasteful number, since it uses less digits than its factorization.

2188388892 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172949 (or 172947 counting only the distinct ones).

The product of its digits is 3538944, while the sum is 57.

The square root of 2188388892 is about 46780.2190247117. The cubic root of 2188388892 is about 1298.2993327553.

The spelling of 2188388892 in words is "two billion, one hundred eighty-eight million, three hundred eighty-eight thousand, eight hundred ninety-two".