18233349186 has 64 divisors (see below), whose sum is σ = 39787090560. Its totient is φ = 5537134080.

The previous prime is 18233349161. The next prime is 18233349193. The reversal of 18233349186 is 68194333281.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1870806 + ... + 1880526.

It is an arithmetic number, because the mean of its divisors is an integer number (621673290).

Almost surely, 2^18233349186 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18233349186, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19893545280).

18233349186 is an abundant number, since it is smaller than the sum of its proper divisors (21553741374).

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

18233349186 is a wasteful number, since it uses less digits than its factorization.

18233349186 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10051.

The product of its digits is 746496, while the sum is 48.

The spelling of 18233349186 in words is "eighteen billion, two hundred thirty-three million, three hundred forty-nine thousand, one hundred eighty-six".