18423348460 has 96 divisors (see below), whose sum is σ = 44878095360. Its totient is φ = 6278630400.

The previous prime is 18423348431. The next prime is 18423348467. The reversal of 18423348460 is 6484332481.

It is a Smith number, since the sum of its digits (43) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (18423348467) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 883555 + ... + 904165.

It is an arithmetic number, because the mean of its divisors is an integer number (467480160).

Almost surely, 2^18423348460 is an apocalyptic number.

18423348460 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 18423348460, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22439047680).

18423348460 is an abundant number, since it is smaller than the sum of its proper divisors (26454746900).

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

18423348460 is a wasteful number, since it uses less digits than its factorization.

18423348460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20887 (or 20885 counting only the distinct ones).

The product of its (nonzero) digits is 442368, while the sum is 43.

The spelling of 18423348460 in words is "eighteen billion, four hundred twenty-three million, three hundred forty-eight thousand, four hundred sixty".