18304307473 has 8 divisors (see below), whose sum is σ = 19670301792. Its totient is φ = 16970454336.

The previous prime is 18304307471. The next prime is 18304307501. The reversal of 18304307473 is 37470340381.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 18304307473 - 2¹ = 18304307471 is a prime.

It is a super-2 number, since 2×18304307473² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (18304307471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8034115 + ... + 8036392.

It is an arithmetic number, because the mean of its divisors is an integer number (2458787724).

Almost surely, 2^18304307473 is an apocalyptic number.

It is an amenable number.

18304307473 is a deficient number, since it is larger than the sum of its proper divisors (1365994319).

18304307473 is a wasteful number, since it uses less digits than its factorization.

18304307473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16070591.

The product of its (nonzero) digits is 169344, while the sum is 40.

The spelling of 18304307473 in words is "eighteen billion, three hundred four million, three hundred seven thousand, four hundred seventy-three".