18474155207 has 2 divisors, whose sum is σ = 18474155208. Its totient is φ = 18474155206.

The previous prime is 18474155201. The next prime is 18474155213. The reversal of 18474155207 is 70255147481.

It is a balanced prime because it is at equal distance from previous prime (18474155201) and next prime (18474155213).

It is an emirp because it is prime and its reverse (70255147481) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18474155207 is a prime.

It is a super-2 number, since 2×18474155207² (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 (18474155201) 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, 9237077603 + 9237077604.

It is an arithmetic number, because the mean of its divisors is an integer number (9237077604).

Almost surely, 2^18474155207 is an apocalyptic number.

18474155207 is a deficient number, since it is larger than the sum of its proper divisors (1).

18474155207 is an equidigital number, since it uses as much as digits as its factorization.

18474155207 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 313600, while the sum is 44.

The spelling of 18474155207 in words is "eighteen billion, four hundred seventy-four million, one hundred fifty-five thousand, two hundred seven".