18068489730 has 288 divisors, whose sum is σ = 51772017024. Its totient is φ = 4362817536.

The previous prime is 18068489713. The next prime is 18068489737. The reversal of 18068489730 is 3798486081.

It is a super-2 number, since 2×18068489730² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (18068489737) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 168864337 + ... + 168864443.

It is an arithmetic number, because the mean of its divisors is an integer number (179763948).

Almost surely, 2^18068489730 is an apocalyptic number.

18068489730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 18068489730, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25886008512).

18068489730 is an abundant number, since it is smaller than the sum of its proper divisors (33703527294).

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

18068489730 is a wasteful number, since it uses less digits than its factorization.

18068489730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 298 (or 266 counting only the distinct ones).

The product of its (nonzero) digits is 2322432, while the sum is 54.

The spelling of 18068489730 in words is "eighteen billion, sixty-eight million, four hundred eighty-nine thousand, seven hundred thirty".