18001969207 has 2 divisors, whose sum is σ = 18001969208. Its totient is φ = 18001969206.

The previous prime is 18001969201. The next prime is 18001969217. The reversal of 18001969207 is 70296910081.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18001969207 - 2¹⁵ = 18001936439 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18001969201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9000984603 + 9000984604.

It is an arithmetic number, because the mean of its divisors is an integer number (9000984604).

Almost surely, 2^18001969207 is an apocalyptic number.

18001969207 is a deficient number, since it is larger than the sum of its proper divisors (1).

18001969207 is an equidigital number, since it uses as much as digits as its factorization.

18001969207 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54432, while the sum is 43.

The spelling of 18001969207 in words is "eighteen billion, one million, nine hundred sixty-nine thousand, two hundred seven".