2993978978 has 16 divisors (see below), whose sum is σ = 4565445120. Its totient is φ = 1472268000.

The previous prime is 2993978959. The next prime is 2993978983. The reversal of 2993978978 is 8798793992.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (71).

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 7 ways as a sum of consecutive naturals, for example, 32303 + ... + 83853.

It is an arithmetic number, because the mean of its divisors is an integer number (285340320).

Almost surely, 2^2993978978 is an apocalyptic number.

2993978978 is a deficient number, since it is larger than the sum of its proper divisors (1571466142).

2993978978 is a wasteful number, since it uses less digits than its factorization.

2993978978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52033.

The product of its digits is 123451776, while the sum is 71.

The square root of 2993978978 is about 54717.2639849618. The cubic root of 2993978978 is about 1441.2840555993.

The spelling of 2993978978 in words is "two billion, nine hundred ninety-three million, nine hundred seventy-eight thousand, nine hundred seventy-eight".