18895049280 has 224 divisors, whose sum is σ = 66784118400. Its totient is φ = 5029115904.

The previous prime is 18895049273. The next prime is 18895049291. The reversal of 18895049280 is 8294059881.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5346394 + ... + 5349926.

Almost surely, 2^18895049280 is an apocalyptic number.

18895049280 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 18895049280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33392059200).

18895049280 is an abundant number, since it is smaller than the sum of its proper divisors (47889069120).

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

18895049280 is a wasteful number, since it uses less digits than its factorization.

18895049280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4178 (or 4162 counting only the distinct ones).

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

The spelling of 18895049280 in words is "eighteen billion, eight hundred ninety-five million, forty-nine thousand, two hundred eighty".