18209107472 has 40 divisors (see below), whose sum is σ = 35614803840. Its totient is φ = 9018293760.

The previous prime is 18209107393. The next prime is 18209107487. The reversal of 18209107472 is 27470190281.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5565197 + ... + 5568467.

It is an arithmetic number, because the mean of its divisors is an integer number (890370096).

Almost surely, 2^18209107472 is an apocalyptic number.

It is an amenable number.

18209107472 is a deficient number, since it is larger than the sum of its proper divisors (17405696368).

18209107472 is a wasteful number, since it uses less digits than its factorization.

18209107472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6471 (or 6465 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 41.

The spelling of 18209107472 in words is "eighteen billion, two hundred nine million, one hundred seven thousand, four hundred seventy-two".