3978163 has 12 divisors (see below), whose sum is σ = 4872360. Its totient is φ = 3229632.

The previous prime is 3978113. The next prime is 3978167. The reversal of 3978163 is 3618793.

It is not a de Polignac number, because 3978163 - 2¹³ = 3969971 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3978167) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1206 + ... + 3067.

It is an arithmetic number, because the mean of its divisors is an integer number (406030).

Almost surely, 2^3978163 is an apocalyptic number.

3978163 is a deficient number, since it is larger than the sum of its proper divisors (894197).

3978163 is a wasteful number, since it uses less digits than its factorization.

3978163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4306 (or 4299 counting only the distinct ones).

The product of its digits is 27216, while the sum is 37.

The square root of 3978163 is about 1994.5332787397. The cubic root of 3978163 is about 158.4507106240.

The spelling of 3978163 in words is "three million, nine hundred seventy-eight thousand, one hundred sixty-three".