18730706280 has 256 divisors, whose sum is σ = 66816368640. Its totient is φ = 4140672000.

The previous prime is 18730706279. The next prime is 18730706287. The reversal of 18730706280 is 8260703781.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (18730706287) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1417705 + ... + 1430855.

It is an arithmetic number, because the mean of its divisors is an integer number (261001440).

Almost surely, 2^18730706280 is an apocalyptic number.

18730706280 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 18730706280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33408184320).

18730706280 is an abundant number, since it is smaller than the sum of its proper divisors (48085662360).

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

18730706280 is a wasteful number, since it uses less digits than its factorization.

18730706280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13272 (or 13268 counting only the distinct ones).

The product of its (nonzero) digits is 112896, while the sum is 42.

The spelling of 18730706280 in words is "eighteen billion, seven hundred thirty million, seven hundred six thousand, two hundred eighty".