18872203536 has 120 divisors (see below), whose sum is σ = 53881580376. Its totient is φ = 6164121600.

The previous prime is 18872203507. The next prime is 18872203579. The reversal of 18872203536 is 63530227881.

18872203536 is a `hidden beast` number, since 18 + 87 + 2 + 20 + 3 + 536 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 6684043536 + 12188160000 = 81756^2 + 110400^2 .

It is a junction number, because it is equal to n+sod(n) for n = 18872203491 and 18872203500.

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 23 ways as a sum of consecutive naturals, for example, 10477836 + ... + 10479636.

Almost surely, 2^18872203536 is an apocalyptic number.

18872203536 is a gapful number since it is divisible by the number (16) 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 18872203536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26940790188).

18872203536 is an abundant number, since it is smaller than the sum of its proper divisors (35009376840).

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

18872203536 is a wasteful number, since it uses less digits than its factorization.

18872203536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3241 (or 3232 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 45.

The spelling of 18872203536 in words is "eighteen billion, eight hundred seventy-two million, two hundred three thousand, five hundred thirty-six".