2090188806 has 32 divisors (see below), whose sum is σ = 4287748608. Its totient is φ = 678911520.

The previous prime is 2090188787. The next prime is 2090188813. The reversal of 2090188806 is 6088810902.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 101800 + ... + 120596.

It is an arithmetic number, because the mean of its divisors is an integer number (133992144).

Almost surely, 2^2090188806 is an apocalyptic number.

2090188806 is an abundant number, since it is smaller than the sum of its proper divisors (2197559802).

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

2090188806 is a wasteful number, since it uses less digits than its factorization.

2090188806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19276.

The product of its (nonzero) digits is 55296, while the sum is 42.

The square root of 2090188806 is about 45718.5827208150. The cubic root of 2090188806 is about 1278.5817637328.

The spelling of 2090188806 in words is "two billion, ninety million, one hundred eighty-eight thousand, eight hundred six".