18586955311 has 2 divisors, whose sum is σ = 18586955312. Its totient is φ = 18586955310.

The previous prime is 18586955267. The next prime is 18586955323. The reversal of 18586955311 is 11355968581.

It is a strong prime.

It is an emirp because it is prime and its reverse (11355968581) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18586955311 - 2⁷ = 18586955183 is a prime.

It is a super-2 number, since 2×18586955311² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18586955351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9293477655 + 9293477656.

It is an arithmetic number, because the mean of its divisors is an integer number (9293477656).

Almost surely, 2^18586955311 is an apocalyptic number.

18586955311 is a deficient number, since it is larger than the sum of its proper divisors (1).

18586955311 is an equidigital number, since it uses as much as digits as its factorization.

18586955311 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1296000, while the sum is 52.

The spelling of 18586955311 in words is "eighteen billion, five hundred eighty-six million, nine hundred fifty-five thousand, three hundred eleven".