18218760756 has 72 divisors (see below), whose sum is σ = 49500986976. Its totient is φ = 5200090560.

The previous prime is 18218760751. The next prime is 18218760761. The reversal of 18218760756 is 65706781281.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (18218760751) and next prime (18218760761).

It is a junction number, because it is equal to n+sod(n) for n = 18218760699 and 18218760708.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18218760751) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 585175 + ... + 615521.

It is an arithmetic number, because the mean of its divisors is an integer number (687513708).

Almost surely, 2^18218760756 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18218760756, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24750493488).

18218760756 is an abundant number, since it is smaller than the sum of its proper divisors (31282226220).

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

18218760756 is a wasteful number, since it uses less digits than its factorization.

18218760756 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31389 (or 31380 counting only the distinct ones).

The product of its (nonzero) digits is 1128960, while the sum is 51.

The spelling of 18218760756 in words is "eighteen billion, two hundred eighteen million, seven hundred sixty thousand, seven hundred fifty-six".