18449186849280 has 1600 divisors, whose sum is σ = 74355311276928. Its totient is φ = 4333472317440.

The previous prime is 18449186849279. The next prime is 18449186849309. The reversal of 18449186849280 is 8294868194481.

18449186849280 is a `hidden beast` number, since 1 + 8 + 4 + 49 + 18 + 6 + 8 + 492 + 80 = 666.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a junction number, because it is equal to n+sod(n) for n = 18449186849199 and 18449186849208.

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, 13437134674 + ... + 13437136046.

Almost surely, 2^{18449186849280} is an apocalyptic number.

18449186849280 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 18449186849280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37177655638464).

18449186849280 is an abundant number, since it is smaller than the sum of its proper divisors (55906124427648).

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

18449186849280 is a wasteful number, since it uses less digits than its factorization.

18449186849280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1599 (or 1574 counting only the distinct ones).

The product of its (nonzero) digits is 254803968, while the sum is 72.

The spelling of 18449186849280 in words is "eighteen trillion, four hundred forty-nine billion, one hundred eighty-six million, eight hundred forty-nine thousand, two hundred eighty".