18349498944 has 140 divisors (see below), whose sum is σ = 62164309504. Its totient is φ = 5242703616.

The previous prime is 18349498931. The next prime is 18349498987. The reversal of 18349498944 is 44989494381.

18349498944 is a `hidden beast` number, since 18 + 3 + 49 + 498 + 94 + 4 = 666.

It is a super-2 number, since 2×18349498944² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 216544 + ... + 289119.

Almost surely, 2^18349498944 is an apocalyptic number.

18349498944 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

18349498944 is an abundant number, since it is smaller than the sum of its proper divisors (43814810560).

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

18349498944 is an equidigital number, since it uses as much as digits as its factorization.

18349498944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 505694 (or 505675 counting only the distinct ones).

The product of its digits is 35831808, while the sum is 63.

The spelling of 18349498944 in words is "eighteen billion, three hundred forty-nine million, four hundred ninety-eight thousand, nine hundred forty-four".