2103564020 has 24 divisors (see below), whose sum is σ = 4677337224. Its totient is φ = 791929856.

The previous prime is 2103564017. The next prime is 2103564031. The reversal of 2103564020 is 204653012.

It can be written as a sum of positive squares in 4 ways, for example, as 864242404 + 1239321616 = 29398^2 + 35204^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3093137 + ... + 3093816.

It is an arithmetic number, because the mean of its divisors is an integer number (194889051).

Almost surely, 2^2103564020 is an apocalyptic number.

2103564020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2103564020 is an abundant number, since it is smaller than the sum of its proper divisors (2573773204).

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

2103564020 is a wasteful number, since it uses less digits than its factorization.

2103564020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6186979 (or 6186977 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 2103564020 is about 45864.6271106612. The cubic root of 2103564020 is about 1281.3032015347.

The spelling of 2103564020 in words is "two billion, one hundred three million, five hundred sixty-four thousand, twenty".