18834264728 has 32 divisors (see below), whose sum is σ = 35746434000. Its totient is φ = 9302092800.

The previous prime is 18834264721. The next prime is 18834264733. The reversal of 18834264728 is 82746243881.

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 18834264728.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18834264721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 735728 + ... + 760896.

Almost surely, 2^18834264728 is an apocalyptic number.

It is an amenable number.

18834264728 is a deficient number, since it is larger than the sum of its proper divisors (16912169272).

18834264728 is a wasteful number, since it uses less digits than its factorization.

18834264728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26315 (or 26311 counting only the distinct ones).

The product of its digits is 4128768, while the sum is 53.

The spelling of 18834264728 in words is "eighteen billion, eight hundred thirty-four million, two hundred sixty-four thousand, seven hundred twenty-eight".