18495482240 has 64 divisors (see below), whose sum is σ = 44538716160. Its totient is φ = 7344156672.

The previous prime is 18495482237. The next prime is 18495482273. The reversal of 18495482240 is 4228459481.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17792 + ... + 193151.

It is an arithmetic number, because the mean of its divisors is an integer number (695917440).

Almost surely, 2^18495482240 is an apocalyptic number.

18495482240 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 18495482240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22269358080).

18495482240 is an abundant number, since it is smaller than the sum of its proper divisors (26043233920).

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

18495482240 is a wasteful number, since it uses less digits than its factorization.

18495482240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211099 (or 211087 counting only the distinct ones).

The product of its (nonzero) digits is 737280, while the sum is 47.

The spelling of 18495482240 in words is "eighteen billion, four hundred ninety-five million, four hundred eighty-two thousand, two hundred forty".