18454313108 has 48 divisors (see below), whose sum is σ = 40296012288. Its totient is φ = 7184268000.

The previous prime is 18454313099. The next prime is 18454313149. The reversal of 18454313108 is 80131345481.

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, 374423 + ... + 420833.

It is an arithmetic number, because the mean of its divisors is an integer number (839500256).

Almost surely, 2^18454313108 is an apocalyptic number.

It is an amenable number.

18454313108 is an abundant number, since it is smaller than the sum of its proper divisors (21841699180).

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

18454313108 is a wasteful number, since it uses less digits than its factorization.

18454313108 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47724 (or 47722 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 38.

Adding to 18454313108 its reverse (80131345481), we get a palindrome (98585658589).

The spelling of 18454313108 in words is "eighteen billion, four hundred fifty-four million, three hundred thirteen thousand, one hundred eight".