18224448403898 has 32 divisors (see below), whose sum is σ = 32121426839040. Its totient is φ = 7665340480560.

The previous prime is 18224448403891. The next prime is 18224448403991. The reversal of 18224448403898 is 89830484442281.

It is not an unprimeable number, because it can be changed into a prime (18224448403891) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 506948990 + ... + 506984937.

It is an arithmetic number, because the mean of its divisors is an integer number (1003794588720).

Almost surely, 2^{18224448403898} is an apocalyptic number.

18224448403898 is a deficient number, since it is larger than the sum of its proper divisors (13896978435142).

18224448403898 is a wasteful number, since it uses less digits than its factorization.

18224448403898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1013934002.

The product of its (nonzero) digits is 113246208, while the sum is 65.

The spelling of 18224448403898 in words is "eighteen trillion, two hundred twenty-four billion, four hundred forty-eight million, four hundred three thousand, eight hundred ninety-eight".