3818121466373 has 2 divisors, whose sum is σ = 3818121466374. Its totient is φ = 3818121466372.

The previous prime is 3818121466363. The next prime is 3818121466399. The reversal of 3818121466373 is 3736641218183.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3323992605124 + 494128861249 = 1823182^2 + 702943^2 .

It is a cyclic number.

It is not a de Polignac number, because 3818121466373 - 2¹² = 3818121462277 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3818121466343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1909060733186 + 1909060733187.

It is an arithmetic number, because the mean of its divisors is an integer number (1909060733187).

Almost surely, 2^{3818121466373} is an apocalyptic number.

It is an amenable number.

3818121466373 is a deficient number, since it is larger than the sum of its proper divisors (1).

3818121466373 is an equidigital number, since it uses as much as digits as its factorization.

3818121466373 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3483648, while the sum is 53.

The spelling of 3818121466373 in words is "three trillion, eight hundred eighteen billion, one hundred twenty-one million, four hundred sixty-six thousand, three hundred seventy-three".