18227381190 has 32 divisors (see below), whose sum is σ = 43844495616. Its totient is φ = 4849659360.

The previous prime is 18227381189. The next prime is 18227381201. The reversal of 18227381190 is 9118372281.

It is a super-2 number, since 2×18227381190² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

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, 672466 + ... + 699045.

It is an arithmetic number, because the mean of its divisors is an integer number (1370140488).

Almost surely, 2^18227381190 is an apocalyptic number.

18227381190 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18227381190 is an abundant number, since it is smaller than the sum of its proper divisors (25617114426).

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

18227381190 is a wasteful number, since it uses less digits than its factorization.

18227381190 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1371964.

The product of its (nonzero) digits is 48384, while the sum is 42.

The spelling of 18227381190 in words is "eighteen billion, two hundred twenty-seven million, three hundred eighty-one thousand, one hundred ninety".