2188749902 has 4 divisors (see below), whose sum is σ = 3283124856. Its totient is φ = 1094374950.

The previous prime is 2188749883. The next prime is 2188749917. The reversal of 2188749902 is 2099478812.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×2188749902² = 9581252267010019208, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 547187474 + ... + 547187477.

It is an arithmetic number, because the mean of its divisors is an integer number (820781214).

Almost surely, 2^2188749902 is an apocalyptic number.

2188749902 is a deficient number, since it is larger than the sum of its proper divisors (1094374954).

2188749902 is a wasteful number, since it uses less digits than its factorization.

2188749902 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1094374953.

The product of its (nonzero) digits is 580608, while the sum is 50.

The square root of 2188749902 is about 46784.0774409414. The cubic root of 2188749902 is about 1298.3707206262.

The spelling of 2188749902 in words is "two billion, one hundred eighty-eight million, seven hundred forty-nine thousand, nine hundred two".