3973074678 has 16 divisors (see below), whose sum is σ = 8829054960. Its totient is φ = 1324358208.

The previous prime is 3973074649. The next prime is 3973074727. The reversal of 3973074678 is 8764703793.

It is a happy number.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (54), and also a Moran number because the ratio is a prime number: 73575457 = 3973074678 / (3 + 9 + 7 + 3 + 0 + 7 + 4 + 6 + 7 + 8).

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 7 ways as a sum of consecutive naturals, for example, 36787675 + ... + 36787782.

It is an arithmetic number, because the mean of its divisors is an integer number (551815935).

Almost surely, 2^3973074678 is an apocalyptic number.

3973074678 is an abundant number, since it is smaller than the sum of its proper divisors (4855980282).

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

3973074678 is a wasteful number, since it uses less digits than its factorization.

3973074678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73575468 (or 73575462 counting only the distinct ones).

The product of its (nonzero) digits is 5334336, while the sum is 54.

The square root of 3973074678 is about 63032.3304186034. The cubic root of 3973074678 is about 1583.8312564160.

The spelling of 3973074678 in words is "three billion, nine hundred seventy-three million, seventy-four thousand, six hundred seventy-eight".