18294804893 has 2 divisors, whose sum is σ = 18294804894. Its totient is φ = 18294804892.

The previous prime is 18294804821. The next prime is 18294804967. The reversal of 18294804893 is 39840849281.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9781605604 + 8513199289 = 98902^2 + 92267^2 .

It is a cyclic number.

It is not a de Polignac number, because 18294804893 - 2⁸ = 18294804637 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18294804293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9147402446 + 9147402447.

It is an arithmetic number, because the mean of its divisors is an integer number (9147402447).

Almost surely, 2^18294804893 is an apocalyptic number.

It is an amenable number.

18294804893 is a deficient number, since it is larger than the sum of its proper divisors (1).

18294804893 is an equidigital number, since it uses as much as digits as its factorization.

18294804893 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3981312, while the sum is 56.

The spelling of 18294804893 in words is "eighteen billion, two hundred ninety-four million, eight hundred four thousand, eight hundred ninety-three".