18136340207 has 2 divisors, whose sum is σ = 18136340208. Its totient is φ = 18136340206.

The previous prime is 18136340203. The next prime is 18136340239. The reversal of 18136340207 is 70204363181.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18136340207 - 2² = 18136340203 is a prime.

It is a super-2 number, since 2×18136340207² (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 (18136340203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9068170103 + 9068170104.

It is an arithmetic number, because the mean of its divisors is an integer number (9068170104).

Almost surely, 2^18136340207 is an apocalyptic number.

18136340207 is a deficient number, since it is larger than the sum of its proper divisors (1).

18136340207 is an equidigital number, since it uses as much as digits as its factorization.

18136340207 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24192, while the sum is 35.

The spelling of 18136340207 in words is "eighteen billion, one hundred thirty-six million, three hundred forty thousand, two hundred seven".