18846945475207 has 2 divisors, whose sum is σ = 18846945475208. Its totient is φ = 18846945475206.

The previous prime is 18846945475133. The next prime is 18846945475223. The reversal of 18846945475207 is 70257454964881.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18846945475207 - 2⁷ = 18846945475079 is a prime.

It is a super-3 number, since 3×18846945475207³ (a number of 41 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18846945475277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9423472737603 + 9423472737604.

It is an arithmetic number, because the mean of its divisors is an integer number (9423472737604).

Almost surely, 2^{18846945475207} is an apocalyptic number.

18846945475207 is a deficient number, since it is larger than the sum of its proper divisors (1).

18846945475207 is an equidigital number, since it uses as much as digits as its factorization.

18846945475207 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 541900800, while the sum is 70.

The spelling of 18846945475207 in words is "eighteen trillion, eight hundred forty-six billion, nine hundred forty-five million, four hundred seventy-five thousand, two hundred seven".