18038411263 has 2 divisors, whose sum is σ = 18038411264. Its totient is φ = 18038411262.

The previous prime is 18038411243. The next prime is 18038411267. The reversal of 18038411263 is 36211483081.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18038411263 - 2²¹ = 18036314111 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18038411267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9019205631 + 9019205632.

It is an arithmetic number, because the mean of its divisors is an integer number (9019205632).

Almost surely, 2^18038411263 is an apocalyptic number.

18038411263 is a deficient number, since it is larger than the sum of its proper divisors (1).

18038411263 is an equidigital number, since it uses as much as digits as its factorization.

18038411263 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27648, while the sum is 37.

The spelling of 18038411263 in words is "eighteen billion, thirty-eight million, four hundred eleven thousand, two hundred sixty-three".