2642890188 has 12 divisors (see below), whose sum is σ = 6166743800. Its totient is φ = 880963392.

The previous prime is 2642890171. The next prime is 2642890207. The reversal of 2642890188 is 8810982462.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 110120413 + ... + 110120436.

Almost surely, 2^2642890188 is an apocalyptic number.

It is an amenable number.

2642890188 is an abundant number, since it is smaller than the sum of its proper divisors (3523853612).

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

2642890188 is a wasteful number, since it uses less digits than its factorization.

2642890188 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220240856 (or 220240854 counting only the distinct ones).

The product of its (nonzero) digits is 442368, while the sum is 48.

The square root of 2642890188 is about 51409.0477250843. The cubic root of 2642890188 is about 1382.5888161622.

The spelling of 2642890188 in words is "two billion, six hundred forty-two million, eight hundred ninety thousand, one hundred eighty-eight".