3163978 has 8 divisors (see below), whose sum is σ = 4764420. Its totient is φ = 1575840.

The previous prime is 3163969. The next prime is 3163991. The reversal of 3163978 is 8793613.

It can be written as a sum of positive squares in 2 ways, for example, as 3143529 + 20449 = 1773^2 + 143^2 .

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

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, 2403 + ... + 3478.

Almost surely, 2^3163978 is an apocalyptic number.

3163978 is a deficient number, since it is larger than the sum of its proper divisors (1600442).

3163978 is a wasteful number, since it uses less digits than its factorization.

3163978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6152.

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

The square root of 3163978 is about 1778.7574314673. The cubic root of 3163978 is about 146.8062296430.

It can be divided in two parts, 31 and 63978, that added together give a square (64009 = 253²).

The spelling of 3163978 in words is "three million, one hundred sixty-three thousand, nine hundred seventy-eight".