4018481886197 has 2 divisors, whose sum is σ = 4018481886198. Its totient is φ = 4018481886196.

The previous prime is 4018481886169. The next prime is 4018481886257. The reversal of 4018481886197 is 7916881848104.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3542548851556 + 475933034641 = 1882166^2 + 689879^2 .

It is a cyclic number.

It is not a de Polignac number, because 4018481886197 - 2¹² = 4018481882101 is a prime.

It is a super-2 number, since 2×4018481886197² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4018481886127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2009240943098 + 2009240943099.

It is an arithmetic number, because the mean of its divisors is an integer number (2009240943099).

Almost surely, 2^{4018481886197} is an apocalyptic number.

It is an amenable number.

4018481886197 is a deficient number, since it is larger than the sum of its proper divisors (1).

4018481886197 is an equidigital number, since it uses as much as digits as its factorization.

4018481886197 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24772608, while the sum is 65.

The spelling of 4018481886197 in words is "four trillion, eighteen billion, four hundred eighty-one million, eight hundred eighty-six thousand, one hundred ninety-seven".