23818019320 has 64 divisors (see below), whose sum is σ = 56891704320. Its totient is φ = 8943273984.

The previous prime is 23818019317. The next prime is 23818019321. The reversal of 23818019320 is 2391081832.

It is a self number, because there is not a number n which added to its sum of digits gives 23818019320.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23818019321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 214714 + ... + 306166.

It is an arithmetic number, because the mean of its divisors is an integer number (888932880).

Almost surely, 2^23818019320 is an apocalyptic number.

23818019320 is a gapful number since it is divisible by the number (20) 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 23818019320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28445852160).

23818019320 is an abundant number, since it is smaller than the sum of its proper divisors (33073685000).

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

23818019320 is a wasteful number, since it uses less digits than its factorization.

23818019320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91864 (or 91860 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 37.

The spelling of 23818019320 in words is "twenty-three billion, eight hundred eighteen million, nineteen thousand, three hundred twenty".