3966482578 has 4 divisors (see below), whose sum is σ = 5949723870. Its totient is φ = 1983241288.

The previous prime is 3966482567. The next prime is 3966482591. The reversal of 3966482578 is 8752846693.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8752846693 = 3413 ⋅2564561.

It can be written as a sum of positive squares in only one way, i.e., 3304295289 + 662187289 = 57483^2 + 25733^2 .

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 as a sum of consecutive naturals, namely, 991620643 + ... + 991620646.

Almost surely, 2^3966482578 is an apocalyptic number.

3966482578 is a deficient number, since it is larger than the sum of its proper divisors (1983241292).

3966482578 is a wasteful number, since it uses less digits than its factorization.

3966482578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1983241291.

The product of its digits is 17418240, while the sum is 58.

The square root of 3966482578 is about 62980.0172912012. The cubic root of 3966482578 is about 1582.9548106217.

The spelling of 3966482578 in words is "three billion, nine hundred sixty-six million, four hundred eighty-two thousand, five hundred seventy-eight".