18345485268 has 72 divisors (see below), whose sum is σ = 51090058656. Its totient is φ = 5504184000.

The previous prime is 18345485203. The next prime is 18345485273. The reversal of 18345485268 is 86258454381.

18345485268 is a `hidden beast` number, since 1 + 8 + 34 + 548 + 5 + 2 + 68 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 189346 + ... + 269337.

It is an arithmetic number, because the mean of its divisors is an integer number (709584148).

Almost surely, 2^18345485268 is an apocalyptic number.

18345485268 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

18345485268 is an abundant number, since it is smaller than the sum of its proper divisors (32744573388).

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

18345485268 is a wasteful number, since it uses less digits than its factorization.

18345485268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 458805 (or 458800 counting only the distinct ones).

The product of its digits is 7372800, while the sum is 54.

The spelling of 18345485268 in words is "eighteen billion, three hundred forty-five million, four hundred eighty-five thousand, two hundred sixty-eight".