3693981378 has 32 divisors (see below), whose sum is σ = 7713781632. Its totient is φ = 1177088000.

The previous prime is 3693981337. The next prime is 3693981407. The reversal of 3693981378 is 8731893963.

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, 255298 + ... + 269378.

It is an arithmetic number, because the mean of its divisors is an integer number (241055676).

Almost surely, 2^3693981378 is an apocalyptic number.

3693981378 is an abundant number, since it is smaller than the sum of its proper divisors (4019800254).

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

3693981378 is a wasteful number, since it uses less digits than its factorization.

3693981378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16010.

The product of its digits is 5878656, while the sum is 57.

The square root of 3693981378 is about 60778.1323997373. The cubic root of 3693981378 is about 1545.8412803903.

The spelling of 3693981378 in words is "three billion, six hundred ninety-three million, nine hundred eighty-one thousand, three hundred seventy-eight".