18253285361 has 2 divisors, whose sum is σ = 18253285362. Its totient is φ = 18253285360.

The previous prime is 18253285291. The next prime is 18253285363. The reversal of 18253285361 is 16358235281.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17251246336 + 1002039025 = 131344^2 + 31655^2 .

It is an emirp because it is prime and its reverse (16358235281) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18253285361 - 2¹⁴ = 18253268977 is a prime.

Together with 18253285363, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (18253285363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9126642680 + 9126642681.

It is an arithmetic number, because the mean of its divisors is an integer number (9126642681).

Almost surely, 2^18253285361 is an apocalyptic number.

It is an amenable number.

18253285361 is a deficient number, since it is larger than the sum of its proper divisors (1).

18253285361 is an equidigital number, since it uses as much as digits as its factorization.

18253285361 is an evil number, because the sum of its binary digits is even.

The product of its digits is 345600, while the sum is 44.

The spelling of 18253285361 in words is "eighteen billion, two hundred fifty-three million, two hundred eighty-five thousand, three hundred sixty-one".