18242658293 has 2 divisors, whose sum is σ = 18242658294. Its totient is φ = 18242658292.

The previous prime is 18242658289. The next prime is 18242658331. The reversal of 18242658293 is 39285624281.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18134123569 + 108534724 = 134663^2 + 10418^2 .

It is a cyclic number.

It is not a de Polignac number, because 18242658293 - 2² = 18242658289 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 (18242658253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9121329146 + 9121329147.

It is an arithmetic number, because the mean of its divisors is an integer number (9121329147).

Almost surely, 2^18242658293 is an apocalyptic number.

It is an amenable number.

18242658293 is a deficient number, since it is larger than the sum of its proper divisors (1).

18242658293 is an equidigital number, since it uses as much as digits as its factorization.

18242658293 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1658880, while the sum is 50.

The spelling of 18242658293 in words is "eighteen billion, two hundred forty-two million, six hundred fifty-eight thousand, two hundred ninety-three".