3806807681478 has 48 divisors (see below), whose sum is σ = 7868185035984. Its totient is φ = 1227818632320.

The previous prime is 3806807681449. The next prime is 3806807681491. The reversal of 3806807681478 is 8741867086083.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 206476 + ... + 2766992.

It is an arithmetic number, because the mean of its divisors is an integer number (163920521583).

Almost surely, 2^{3806807681478} is an apocalyptic number.

3806807681478 is an abundant number, since it is smaller than the sum of its proper divisors (4061377354506).

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

3806807681478 is a wasteful number, since it uses less digits than its factorization.

3806807681478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2560777 (or 2560740 counting only the distinct ones).

The product of its (nonzero) digits is 86704128, while the sum is 66.

The spelling of 3806807681478 in words is "three trillion, eight hundred six billion, eight hundred seven million, six hundred eighty-one thousand, four hundred seventy-eight".