18183819456 has 168 divisors, whose sum is σ = 56926691328. Its totient is φ = 5503680000.

The previous prime is 18183819421. The next prime is 18183819473. The reversal of 18183819456 is 65491838181.

It is a happy number.

18183819456 is a `hidden beast` number, since 1 + 8 + 183 + 8 + 1 + 9 + 456 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9319281 + ... + 9321231.

Almost surely, 2^18183819456 is an apocalyptic number.

18183819456 is a gapful number since it is divisible by the number (16) 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 18183819456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28463345664).

18183819456 is an abundant number, since it is smaller than the sum of its proper divisors (38742871872).

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

18183819456 is a wasteful number, since it uses less digits than its factorization.

18183819456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3451 (or 3438 counting only the distinct ones).

The product of its digits is 1658880, while the sum is 54.

The spelling of 18183819456 in words is "eighteen billion, one hundred eighty-three million, eight hundred nineteen thousand, four hundred fifty-six".