18785711473 has 8 divisors (see below), whose sum is σ = 19234987200. Its totient is φ = 18336999408.

The previous prime is 18785711471. The next prime is 18785711507. The reversal of 18785711473 is 37411758781.

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 18785711473 - 2¹ = 18785711471 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 18785711473.

It is not an unprimeable number, because it can be changed into a prime (18785711471) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73078 + ... + 207151.

It is an arithmetic number, because the mean of its divisors is an integer number (2404373400).

Almost surely, 2^18785711473 is an apocalyptic number.

It is an amenable number.

18785711473 is a deficient number, since it is larger than the sum of its proper divisors (449275727).

18785711473 is a wasteful number, since it uses less digits than its factorization.

18785711473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 281831.

The product of its digits is 1317120, while the sum is 52.

The spelling of 18785711473 in words is "eighteen billion, seven hundred eighty-five million, seven hundred eleven thousand, four hundred seventy-three".