18282774361 has 2 divisors, whose sum is σ = 18282774362. Its totient is φ = 18282774360.

The previous prime is 18282774337. The next prime is 18282774373. The reversal of 18282774361 is 16347728281.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10146734361 + 8136040000 = 100731^2 + 90200^2 .

It is a cyclic number.

It is not a de Polignac number, because 18282774361 - 2⁹ = 18282773849 is a prime.

It is a super-3 number, since 3×18282774361³ (a number of 32 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (18282774311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9141387180 + 9141387181.

It is an arithmetic number, because the mean of its divisors is an integer number (9141387181).

Almost surely, 2^18282774361 is an apocalyptic number.

It is an amenable number.

18282774361 is a deficient number, since it is larger than the sum of its proper divisors (1).

18282774361 is an equidigital number, since it uses as much as digits as its factorization.

18282774361 is an evil number, because the sum of its binary digits is even.

The product of its digits is 903168, while the sum is 49.

The spelling of 18282774361 in words is "eighteen billion, two hundred eighty-two million, seven hundred seventy-four thousand, three hundred sixty-one".