18616730000 has 100 divisors (see below), whose sum is σ = 49170797808. Its totient is φ = 6769680000.

The previous prime is 18616729997. The next prime is 18616730009. The reversal of 18616730000 is 3761681.

It is a tau number, because it is divible by the number of its divisors (100).

It is not an unprimeable number, because it can be changed into a prime (18616730009) by changing a digit.

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, 25379 + ... + 194621.

Almost surely, 2^18616730000 is an apocalyptic number.

18616730000 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 18616730000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24585398904).

18616730000 is an abundant number, since it is smaller than the sum of its proper divisors (30554067808).

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

18616730000 is a wasteful number, since it uses less digits than its factorization.

18616730000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169282 (or 169261 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 32.

The spelling of 18616730000 in words is "eighteen billion, six hundred sixteen million, seven hundred thirty thousand".