18573203040 has 384 divisors, whose sum is σ = 68990745600. Its totient is φ = 4197924864.

The previous prime is 18573203027. The next prime is 18573203063. The reversal of 18573203040 is 4030237581.

It is a junction number, because it is equal to n+sod(n) for n = 18573202992 and 18573203010.

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 63 ways as a sum of consecutive naturals, for example, 15969499 + ... + 15970661.

It is an arithmetic number, because the mean of its divisors is an integer number (179663400).

Almost surely, 2^18573203040 is an apocalyptic number.

18573203040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18573203040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34495372800).

18573203040 is an abundant number, since it is smaller than the sum of its proper divisors (50417542560).

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

18573203040 is a wasteful number, since it uses less digits than its factorization.

18573203040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1299 (or 1277 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 33.

The spelling of 18573203040 in words is "eighteen billion, five hundred seventy-three million, two hundred three thousand, forty".