18804032293 has 6 divisors (see below), whose sum is σ = 19325986386. Its totient is φ = 18295813872.

The previous prime is 18804032287. The next prime is 18804032323. The reversal of 18804032293 is 39223040881.

It can be written as a sum of positive squares in 3 ways, for example, as 4871062849 + 13932969444 = 69793^2 + 118038^2 .

It is a de Polignac number, because none of the positive numbers 2^k-18804032293 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18804032393) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6866430 + ... + 6869167.

It is an arithmetic number, because the mean of its divisors is an integer number (3220997731).

Almost surely, 2^18804032293 is an apocalyptic number.

It is an amenable number.

18804032293 is a deficient number, since it is larger than the sum of its proper divisors (521954093).

18804032293 is an equidigital number, since it uses as much as digits as its factorization.

18804032293 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13735671 (or 13735634 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 40.

The spelling of 18804032293 in words is "eighteen billion, eight hundred four million, thirty-two thousand, two hundred ninety-three".