3915866378 has 8 divisors (see below), whose sum is σ = 5880803040. Its totient is φ = 1955598700.

The previous prime is 3915866369. The next prime is 3915866393. The reversal of 3915866378 is 8736685193.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1165148 + ... + 1168503.

It is an arithmetic number, because the mean of its divisors is an integer number (735100380).

Almost surely, 2^3915866378 is an apocalyptic number.

3915866378 is a deficient number, since it is larger than the sum of its proper divisors (1964936662).

3915866378 is a wasteful number, since it uses less digits than its factorization.

3915866378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2334492.

The product of its digits is 6531840, while the sum is 56.

The square root of 3915866378 is about 62576.8837351302. The cubic root of 3915866378 is about 1576.1926135293.

The spelling of 3915866378 in words is "three billion, nine hundred fifteen million, eight hundred sixty-six thousand, three hundred seventy-eight".