18285413093 has 2 divisors, whose sum is σ = 18285413094. Its totient is φ = 18285413092.

The previous prime is 18285413063. The next prime is 18285413099. The reversal of 18285413093 is 39031458281.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9145670689 + 9139742404 = 95633^2 + 95602^2 .

It is a cyclic number.

It is not a de Polignac number, because 18285413093 - 2¹² = 18285408997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18285413099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9142706546 + 9142706547.

It is an arithmetic number, because the mean of its divisors is an integer number (9142706547).

Almost surely, 2^18285413093 is an apocalyptic number.

It is an amenable number.

18285413093 is a deficient number, since it is larger than the sum of its proper divisors (1).

18285413093 is an equidigital number, since it uses as much as digits as its factorization.

18285413093 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 207360, while the sum is 44.

The spelling of 18285413093 in words is "eighteen billion, two hundred eighty-five million, four hundred thirteen thousand, ninety-three".