18214786100 has 144 divisors (see below), whose sum is σ = 45816150912. Its totient is φ = 6156656640.

The previous prime is 18214786099. The next prime is 18214786133. The reversal of 18214786100 is 168741281.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 31030007 + ... + 31030593.

Almost surely, 2^18214786100 is an apocalyptic number.

18214786100 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 18214786100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22908075456).

18214786100 is an abundant number, since it is smaller than the sum of its proper divisors (27601364812).

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

18214786100 is a wasteful number, since it uses less digits than its factorization.

18214786100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1162 (or 1155 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 38.

The spelling of 18214786100 in words is "eighteen billion, two hundred fourteen million, seven hundred eighty-six thousand, one hundred".