18723737088 has 240 divisors, whose sum is σ = 64047984000. Its totient is φ = 5349390336.

The previous prime is 18723737047. The next prime is 18723737099. The reversal of 18723737088 is 88073732781.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 860163 + ... + 881661.

It is an arithmetic number, because the mean of its divisors is an integer number (266866600).

Almost surely, 2^18723737088 is an apocalyptic number.

18723737088 is a gapful number since it is divisible by the number (18) 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 18723737088, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32023992000).

18723737088 is an abundant number, since it is smaller than the sum of its proper divisors (45324246912).

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

18723737088 is an frugal number, since it uses more digits than its factorization.

18723737088 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21539 (or 21511 counting only the distinct ones).

The product of its (nonzero) digits is 3161088, while the sum is 54.

The spelling of 18723737088 in words is "eighteen billion, seven hundred twenty-three million, seven hundred thirty-seven thousand, eighty-eight".