3818268686385 has 80 divisors (see below), whose sum is σ = 7075983927936. Its totient is φ = 1968545037312.

The previous prime is 3818268686363. The next prime is 3818268686389. The reversal of 3818268686385 is 5836868628183.

3818268686385 is a `hidden beast` number, since 3 + 8 + 182 + 6 + 8 + 68 + 6 + 385 = 666.

It is not a de Polignac number, because 3818268686385 - 2¹⁴ = 3818268670001 is a prime.

It is a super-2 number, since 2×3818268686385² (a number of 26 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (3818268686389) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 559092 + ... + 2819418.

Almost surely, 2^{3818268686385} is an apocalyptic number.

It is an amenable number.

3818268686385 is a deficient number, since it is larger than the sum of its proper divisors (3257715241551).

3818268686385 is a wasteful number, since it uses less digits than its factorization.

3818268686385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2260484 (or 2260475 counting only the distinct ones).

The product of its digits is 637009920, while the sum is 72.

The spelling of 3818268686385 in words is "three trillion, eight hundred eighteen billion, two hundred sixty-eight million, six hundred eighty-six thousand, three hundred eighty-five".