2090443640 has 32 divisors (see below), whose sum is σ = 4723036560. Its totient is φ = 832704000.

The previous prime is 2090443639. The next prime is 2090443679. The reversal of 2090443640 is 463440902.

It is a super-2 number, since 2×2090443640² = 8739909224032899200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2090443597 and 2090443606.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 98786 + ... + 118065.

Almost surely, 2^2090443640 is an apocalyptic number.

2090443640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2090443640 is an abundant number, since it is smaller than the sum of its proper divisors (2632592920).

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

2090443640 is a wasteful number, since it uses less digits than its factorization.

2090443640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217103 (or 217099 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 32.

The square root of 2090443640 is about 45721.3696207802. The cubic root of 2090443640 is about 1278.6337228131.

The spelling of 2090443640 in words is "two billion, ninety million, four hundred forty-three thousand, six hundred forty".