3978183798396 has 72 divisors (see below), whose sum is σ = 10320728942160. Its totient is φ = 1291592054016.

The previous prime is 3978183798389. The next prime is 3978183798409. The reversal of 3978183798396 is 6938973818793.

3978183798396 is a `hidden beast` number, since 3 + 9 + 7 + 81 + 8 + 379 + 83 + 96 = 666.

It is a Smith number, since the sum of its digits (81) coincides with the sum of the digits of its prime factors.

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, 9051231 + ... + 9480566.

It is an arithmetic number, because the mean of its divisors is an integer number (143343457530).

Almost surely, 2^{3978183798396} is an apocalyptic number.

3978183798396 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

3978183798396 is an abundant number, since it is smaller than the sum of its proper divisors (6342545143764).

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

3978183798396 is a wasteful number, since it uses less digits than its factorization.

3978183798396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18531963 (or 18531958 counting only the distinct ones).

The product of its digits is 2962842624, while the sum is 81.

The spelling of 3978183798396 in words is "three trillion, nine hundred seventy-eight billion, one hundred eighty-three million, seven hundred ninety-eight thousand, three hundred ninety-six".