3818121466338 has 12 divisors (see below), whose sum is σ = 8272596510438. Its totient is φ = 1272707155440.

The previous prime is 3818121466219. The next prime is 3818121466343. The reversal of 3818121466338 is 8336641218183.

3818121466338 is a `hidden beast` number, since 3 + 81 + 81 + 21 + 466 + 3 + 3 + 8 = 666.

It can be written as a sum of positive squares in only one way, i.e., 3240313207569 + 577808258769 = 1800087^2 + 760137^2 .

It is a super-2 number, since 2×3818121466338² (a number of 26 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 106058929603 + ... + 106058929638.

Almost surely, 2^{3818121466338} is an apocalyptic number.

3818121466338 is an abundant number, since it is smaller than the sum of its proper divisors (4454475044100).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3818121466338 is a wasteful number, since it uses less digits than its factorization.

3818121466338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212117859249 (or 212117859246 counting only the distinct ones).

The product of its digits is 3981312, while the sum is 54.

The spelling of 3818121466338 in words is "three trillion, eight hundred eighteen billion, one hundred twenty-one million, four hundred sixty-six thousand, three hundred thirty-eight".