18449087744160 has 240 divisors, whose sum is σ = 65163461539176. Its totient is φ = 4915710001152.

The previous prime is 18449087744149. The next prime is 18449087744167. The reversal of 18449087744160 is 6144778094481.

It is a happy number.

18449087744160 is a `hidden beast` number, since 1 + 8 + 4 + 490 + 87 + 7 + 4 + 4 + 1 + 60 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 14178930002064 + 4270157742096 = 3765492^2 + 2066436^2 .

It is a tau number, because it is divible by the number of its divisors (240).

It is a super-2 number, since 2×18449087744160² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (18449087744167) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 15187464 + ... + 16357176.

Almost surely, 2^{18449087744160} is an apocalyptic number.

18449087744160 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 18449087744160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32581730769588).

18449087744160 is an abundant number, since it is smaller than the sum of its proper divisors (46714373795016).

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

18449087744160 is a wasteful number, since it uses less digits than its factorization.

18449087744160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1170957 (or 1170940 counting only the distinct ones).

The product of its (nonzero) digits is 43352064, while the sum is 63.

The spelling of 18449087744160 in words is "eighteen trillion, four hundred forty-nine billion, eighty-seven million, seven hundred forty-four thousand, one hundred sixty".