3959178378 has 32 divisors (see below), whose sum is σ = 8024140800. Its totient is φ = 1302118896.

The previous prime is 3959178341. The next prime is 3959178403. The reversal of 3959178378 is 8738719593.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1334725 + ... + 1337687.

It is an arithmetic number, because the mean of its divisors is an integer number (250754400).

Almost surely, 2^3959178378 is an apocalyptic number.

3959178378 is an abundant number, since it is smaller than the sum of its proper divisors (4064962422).

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

3959178378 is a wasteful number, since it uses less digits than its factorization.

3959178378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5866.

The product of its digits is 11430720, while the sum is 60.

The square root of 3959178378 is about 62922.0023362258. The cubic root of 3959178378 is about 1581.9825534838.

The spelling of 3959178378 in words is "three billion, nine hundred fifty-nine million, one hundred seventy-eight thousand, three hundred seventy-eight".