18031683011 has 2 divisors, whose sum is σ = 18031683012. Its totient is φ = 18031683010.

The previous prime is 18031682989. The next prime is 18031683013. The reversal of 18031683011 is 11038613081.

It is a strong prime.

It is an emirp because it is prime and its reverse (11038613081) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18031683011 is a prime.

It is a super-2 number, since 2×18031683011² (a number of 21 digits) contains 22 as substring.

Together with 18031683013, 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 (18031683013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9015841505 + 9015841506.

It is an arithmetic number, because the mean of its divisors is an integer number (9015841506).

Almost surely, 2^18031683011 is an apocalyptic number.

18031683011 is a deficient number, since it is larger than the sum of its proper divisors (1).

18031683011 is an equidigital number, since it uses as much as digits as its factorization.

18031683011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 32.

The spelling of 18031683011 in words is "eighteen billion, thirty-one million, six hundred eighty-three thousand, eleven".