18418823548430 has 32 divisors (see below), whose sum is σ = 33631739015040. Its totient is φ = 7261662320640.

The previous prime is 18418823548429. The next prime is 18418823548441. The reversal of 18418823548430 is 3484532881481.

It is a self number, because there is not a number n which added to its sum of digits gives 18418823548430.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19747781 + ... + 20659440.

It is an arithmetic number, because the mean of its divisors is an integer number (1050991844220).

Almost surely, 2^{18418823548430} is an apocalyptic number.

18418823548430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18418823548430 is a deficient number, since it is larger than the sum of its proper divisors (15212915466610).

18418823548430 is a wasteful number, since it uses less digits than its factorization.

18418823548430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40407884.

The product of its (nonzero) digits is 23592960, while the sum is 59.

The spelling of 18418823548430 in words is "eighteen trillion, four hundred eighteen billion, eight hundred twenty-three million, five hundred forty-eight thousand, four hundred thirty".