3681144678 has 8 divisors (see below), whose sum is σ = 7362289368. Its totient is φ = 1227048224.

The previous prime is 3681144661. The next prime is 3681144713. The reversal of 3681144678 is 8764411863.

It is a sphenic number, since it is the product of 3 distinct primes.

3681144678 is an admirable number.

It is a super-2 number, since 2×3681144678² = 27101652280735447368, which contains 22 as substring.

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 3 ways as a sum of consecutive naturals, for example, 306762051 + ... + 306762062.

It is an arithmetic number, because the mean of its divisors is an integer number (920286171).

Almost surely, 2^3681144678 is an apocalyptic number.

3681144678 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

3681144678 is a wasteful number, since it uses less digits than its factorization.

3681144678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 613524118.

The product of its digits is 774144, while the sum is 48.

The square root of 3681144678 is about 60672.4375478685. The cubic root of 3681144678 is about 1544.0485867441.

The spelling of 3681144678 in words is "three billion, six hundred eighty-one million, one hundred forty-four thousand, six hundred seventy-eight".