18207768207 has 16 divisors (see below), whose sum is σ = 24478363008. Its totient is φ = 12037964640.

The previous prime is 18207768197. The next prime is 18207768283. The reversal of 18207768207 is 70286770281.

It is a happy number.

It is not a de Polignac number, because 18207768207 - 2¹² = 18207764111 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18207768307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 619548 + ... + 648270.

It is an arithmetic number, because the mean of its divisors is an integer number (1529897688).

Almost surely, 2^18207768207 is an apocalyptic number.

18207768207 is a deficient number, since it is larger than the sum of its proper divisors (6270594801).

18207768207 is a wasteful number, since it uses less digits than its factorization.

18207768207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30470.

The product of its (nonzero) digits is 526848, while the sum is 48.

The spelling of 18207768207 in words is "eighteen billion, two hundred seven million, seven hundred sixty-eight thousand, two hundred seven".