18529821368 has 16 divisors (see below), whose sum is σ = 34775218680. Its totient is φ = 9256429728.

The previous prime is 18529821367. The next prime is 18529821403. The reversal of 18529821368 is 86312892581.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18529821367) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1050830 + ... + 1068317.

Almost surely, 2^18529821368 is an apocalyptic number.

It is an amenable number.

18529821368 is a deficient number, since it is larger than the sum of its proper divisors (16245397312).

18529821368 is a wasteful number, since it uses less digits than its factorization.

18529821368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2120246 (or 2120242 counting only the distinct ones).

The product of its digits is 1658880, while the sum is 53.

The spelling of 18529821368 in words is "eighteen billion, five hundred twenty-nine million, eight hundred twenty-one thousand, three hundred sixty-eight".