2978845786 has 16 divisors (see below), whose sum is σ = 5108241600. Its totient is φ = 1276236000.

The previous prime is 2978845763. The next prime is 2978845787. The reversal of 2978845786 is 6875488792.

It is not an unprimeable number, because it can be changed into a prime (2978845787) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12790 + ... + 78238.

It is an arithmetic number, because the mean of its divisors is an integer number (319265100).

Almost surely, 2^2978845786 is an apocalyptic number.

2978845786 is a deficient number, since it is larger than the sum of its proper divisors (2129395814).

2978845786 is a wasteful number, since it uses less digits than its factorization.

2978845786 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68709.

The product of its digits is 54190080, while the sum is 64.

The square root of 2978845786 is about 54578.8034496910. The cubic root of 2978845786 is about 1438.8516091647.

The spelling of 2978845786 in words is "two billion, nine hundred seventy-eight million, eight hundred forty-five thousand, seven hundred eighty-six".