18281853701 has 2 divisors, whose sum is σ = 18281853702. Its totient is φ = 18281853700.

The previous prime is 18281853691. The next prime is 18281853739. The reversal of 18281853701 is 10735818281.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14735532100 + 3546321601 = 121390^2 + 59551^2 .

It is a cyclic number.

It is not a de Polignac number, because 18281853701 - 2³⁴ = 1101984517 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18281853791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9140926850 + 9140926851.

It is an arithmetic number, because the mean of its divisors is an integer number (9140926851).

Almost surely, 2^18281853701 is an apocalyptic number.

It is an amenable number.

18281853701 is a deficient number, since it is larger than the sum of its proper divisors (1).

18281853701 is an equidigital number, since it uses as much as digits as its factorization.

18281853701 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 107520, while the sum is 44.

The spelling of 18281853701 in words is "eighteen billion, two hundred eighty-one million, eight hundred fifty-three thousand, seven hundred one".