18757224220 has 48 divisors (see below), whose sum is σ = 45038730240. Its totient is φ = 6427992384.

The previous prime is 18757224179. The next prime is 18757224253. The reversal of 18757224220 is 2242275781.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 274317 + ... + 335803.

It is an arithmetic number, because the mean of its divisors is an integer number (938306880).

Almost surely, 2^18757224220 is an apocalyptic number.

18757224220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18757224220 is an abundant number, since it is smaller than the sum of its proper divisors (26281506020).

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

18757224220 is a wasteful number, since it uses less digits than its factorization.

18757224220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63682 (or 63680 counting only the distinct ones).

The product of its (nonzero) digits is 125440, while the sum is 40.

The spelling of 18757224220 in words is "eighteen billion, seven hundred fifty-seven million, two hundred twenty-four thousand, two hundred twenty".