18427500000 has 960 divisors, whose sum is σ = 83376349056. Its totient is φ = 3888000000.

The previous prime is 18427499977. The next prime is 18427500029. The reversal of 18427500000 is 572481.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 1417499994 + ... + 1417500006.

Almost surely, 2^18427500000 is an apocalyptic number.

18427500000 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 18427500000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41688174528).

18427500000 is an abundant number, since it is smaller than the sum of its proper divisors (64948849056).

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

18427500000 is an frugal number, since it uses more digits than its factorization.

18427500000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77 (or 30 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 27.

The spelling of 18427500000 in words is "eighteen billion, four hundred twenty-seven million, five hundred thousand".