2978047966 has 8 divisors (see below), whose sum is σ = 4469470200. Its totient is φ = 1488224568.

The previous prime is 2978047949. The next prime is 2978047993. The reversal of 2978047966 is 6697408792.

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

It is a self number, because there is not a number n which added to its sum of digits gives 2978047966.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 395041 + ... + 402508.

It is an arithmetic number, because the mean of its divisors is an integer number (558683775).

Almost surely, 2^2978047966 is an apocalyptic number.

2978047966 is a deficient number, since it is larger than the sum of its proper divisors (1491422234).

2978047966 is a wasteful number, since it uses less digits than its factorization.

2978047966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 799418.

The product of its (nonzero) digits is 9144576, while the sum is 58.

The square root of 2978047966 is about 54571.4940788687. The cubic root of 2978047966 is about 1438.7231425065.

The spelling of 2978047966 in words is "two billion, nine hundred seventy-eight million, forty-seven thousand, nine hundred sixty-six".