18619027840 has 256 divisors, whose sum is σ = 52546320000. Its totient is φ = 6305316864.

The previous prime is 18619027799. The next prime is 18619027849. The reversal of 18619027840 is 4872091681.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18619027849) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19536804 + ... + 19537756.

Almost surely, 2^18619027840 is an apocalyptic number.

18619027840 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 18619027840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26273160000).

18619027840 is an abundant number, since it is smaller than the sum of its proper divisors (33927292160).

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

18619027840 is an frugal number, since it uses more digits than its factorization.

18619027840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1082 (or 1056 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 46.

The spelling of 18619027840 in words is "eighteen billion, six hundred nineteen million, twenty-seven thousand, eight hundred forty".