18282378840 has 192 divisors, whose sum is σ = 60397747200. Its totient is φ = 4423921920.

The previous prime is 18282378811. The next prime is 18282378841. The reversal of 18282378840 is 4887328281.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18282378841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 12530031 + ... + 12531489.

It is an arithmetic number, because the mean of its divisors is an integer number (314571600).

Almost surely, 2^18282378840 is an apocalyptic number.

18282378840 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 18282378840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30198873600).

18282378840 is an abundant number, since it is smaller than the sum of its proper divisors (42115368360).

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

18282378840 is a wasteful number, since it uses less digits than its factorization.

18282378840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2358 (or 2343 counting only the distinct ones).

The product of its (nonzero) digits is 1376256, while the sum is 51.

The spelling of 18282378840 in words is "eighteen billion, two hundred eighty-two million, three hundred seventy-eight thousand, eight hundred forty".