18726631700 has 72 divisors (see below), whose sum is σ = 46481400000. Its totient is φ = 6415119360.

The previous prime is 18726631663. The next prime is 18726631747. The reversal of 18726631700 is 713662781.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 863591 + ... + 885009.

It is an arithmetic number, because the mean of its divisors is an integer number (645575000).

Almost surely, 2^18726631700 is an apocalyptic number.

18726631700 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 18726631700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23240700000).

18726631700 is an abundant number, since it is smaller than the sum of its proper divisors (27754768300).

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

18726631700 is a wasteful number, since it uses less digits than its factorization.

18726631700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22689 (or 22682 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 41.

The spelling of 18726631700 in words is "eighteen billion, seven hundred twenty-six million, six hundred thirty-one thousand, seven hundred".