18226620007 has 2 divisors, whose sum is σ = 18226620008. Its totient is φ = 18226620006.

The previous prime is 18226619981. The next prime is 18226620019. The reversal of 18226620007 is 70002662281.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18226620007 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18226620037) 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, 9113310003 + 9113310004.

It is an arithmetic number, because the mean of its divisors is an integer number (9113310004).

Almost surely, 2^18226620007 is an apocalyptic number.

18226620007 is a deficient number, since it is larger than the sum of its proper divisors (1).

18226620007 is an equidigital number, since it uses as much as digits as its factorization.

18226620007 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16128, while the sum is 34.

The spelling of 18226620007 in words is "eighteen billion, two hundred twenty-six million, six hundred twenty thousand, seven".