18292280840 has 64 divisors (see below), whose sum is σ = 44592197760. Its totient is φ = 6726343680.

The previous prime is 18292280833. The next prime is 18292280843. The reversal of 18292280840 is 4808229281.

It is a happy number.

It is a super-2 number, since 2×18292280840² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 18292280791 and 18292280800.

It is not an unprimeable number, because it can be changed into a prime (18292280843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 283556 + ... + 342035.

It is an arithmetic number, because the mean of its divisors is an integer number (696753090).

Almost surely, 2^18292280840 is an apocalyptic number.

18292280840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18292280840 is an abundant number, since it is smaller than the sum of its proper divisors (26299916920).

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

18292280840 is a wasteful number, since it uses less digits than its factorization.

18292280840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 625662 (or 625658 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 44.

The spelling of 18292280840 in words is "eighteen billion, two hundred ninety-two million, two hundred eighty thousand, eight hundred forty".