3978184367240 has 32 divisors (see below), whose sum is σ = 8950974439680. Its totient is φ = 1591263148992.

The previous prime is 3978184367219. The next prime is 3978184367243. The reversal of 3978184367240 is 427634818793.

It is not an unprimeable number, because it can be changed into a prime (3978184367243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8985719 + ... + 9418041.

It is an arithmetic number, because the mean of its divisors is an integer number (279717951240).

Almost surely, 2^{3978184367240} is an apocalyptic number.

It is an amenable number.

3978184367240 is an abundant number, since it is smaller than the sum of its proper divisors (4972790072440).

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

3978184367240 is a wasteful number, since it uses less digits than its factorization.

3978184367240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 662381 (or 662377 counting only the distinct ones).

The product of its (nonzero) digits is 48771072, while the sum is 62.

The spelling of 3978184367240 in words is "three trillion, nine hundred seventy-eight billion, one hundred eighty-four million, three hundred sixty-seven thousand, two hundred forty".