3946137678 has 36 divisors (see below), whose sum is σ = 9945879840. Its totient is φ = 1127467656.

The previous prime is 3946137667. The next prime is 3946137691. The reversal of 3946137678 is 8767316493.

3946137678 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

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 17 ways as a sum of consecutive naturals, for example, 2236158 + ... + 2237921.

It is an arithmetic number, because the mean of its divisors is an integer number (276274440).

Almost surely, 2^3946137678 is an apocalyptic number.

3946137678 is an abundant number, since it is smaller than the sum of its proper divisors (5999742162).

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

3946137678 is a wasteful number, since it uses less digits than its factorization.

3946137678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4474101 (or 4474091 counting only the distinct ones).

The product of its digits is 4572288, while the sum is 54.

The square root of 3946137678 is about 62818.2909509643. The cubic root of 3946137678 is about 1580.2437371672.

The spelling of 3946137678 in words is "three billion, nine hundred forty-six million, one hundred thirty-seven thousand, six hundred seventy-eight".