18421360748 has 24 divisors (see below), whose sum is σ = 37027872000. Its totient is φ = 7855193808.

The previous prime is 18421360723. The next prime is 18421360751. The reversal of 18421360748 is 84706312481.

It is a junction number, because it is equal to n+sod(n) for n = 18421360699 and 18421360708.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1647458 + ... + 1658601.

It is an arithmetic number, because the mean of its divisors is an integer number (1542828000).

Almost surely, 2^18421360748 is an apocalyptic number.

It is an amenable number.

18421360748 is an abundant number, since it is smaller than the sum of its proper divisors (18606511252).

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

18421360748 is a wasteful number, since it uses less digits than its factorization.

18421360748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3306269 (or 3306267 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 44.

The spelling of 18421360748 in words is "eighteen billion, four hundred twenty-one million, three hundred sixty thousand, seven hundred forty-eight".