18200000281 has 2 divisors, whose sum is σ = 18200000282. Its totient is φ = 18200000280.

The previous prime is 18200000261. The next prime is 18200000339.

18200000281 is nontrivially palindromic in base 10.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16919505625 + 1280494656 = 130075^2 + 35784^2 .

It is a palprime.

It is a cyclic number.

It is not a de Polignac number, because 18200000281 - 2⁵ = 18200000249 is a prime.

It is a super-2 number, since 2×18200000281² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (18200000261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9100000140 + 9100000141.

It is an arithmetic number, because the mean of its divisors is an integer number (9100000141).

Almost surely, 2^18200000281 is an apocalyptic number.

It is an amenable number.

18200000281 is a deficient number, since it is larger than the sum of its proper divisors (1).

18200000281 is an equidigital number, since it uses as much as digits as its factorization.

18200000281 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 256, while the sum is 22.

It can be divided in two parts, 18200000 and 281, that added together give a palindrome (18200281).

The spelling of 18200000281 in words is "eighteen billion, two hundred million, two hundred eighty-one", and thus it is an aban number.