3818868368409 has 12 divisors (see below), whose sum is σ = 5532039869616. Its totient is φ = 2538575320632.

The previous prime is 3818868368407. The next prime is 3818868368423. The reversal of 3818868368409 is 9048638688183.

3818868368409 is a `hidden beast` number, since 3 + 8 + 1 + 8 + 86 + 83 + 68 + 409 = 666.

It is not a de Polignac number, because 3818868368409 - 2¹ = 3818868368407 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3818868368401) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 611407119 + ... + 611413364.

It is an arithmetic number, because the mean of its divisors is an integer number (461003322468).

Almost surely, 2^{3818868368409} is an apocalyptic number.

It is an amenable number.

3818868368409 is a deficient number, since it is larger than the sum of its proper divisors (1713171501207).

3818868368409 is a wasteful number, since it uses less digits than its factorization.

3818868368409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1222820836 (or 1222820833 counting only the distinct ones).

The product of its (nonzero) digits is 382205952, while the sum is 72.

The spelling of 3818868368409 in words is "three trillion, eight hundred eighteen billion, eight hundred sixty-eight million, three hundred sixty-eight thousand, four hundred nine".