2978885783 has 2 divisors, whose sum is σ = 2978885784. Its totient is φ = 2978885782.

The previous prime is 2978885737. The next prime is 2978885801. The reversal of 2978885783 is 3875888792.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2978885783 - 2⁶ = 2978885719 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2978885183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1489442891 + 1489442892.

It is an arithmetic number, because the mean of its divisors is an integer number (1489442892).

Almost surely, 2^2978885783 is an apocalyptic number.

2978885783 is a deficient number, since it is larger than the sum of its proper divisors (1).

2978885783 is an equidigital number, since it uses as much as digits as its factorization.

2978885783 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 54190080, while the sum is 65.

The square root of 2978885783 is about 54579.1698636027. The cubic root of 2978885783 is about 1438.8580489622.

The spelling of 2978885783 in words is "two billion, nine hundred seventy-eight million, eight hundred eighty-five thousand, seven hundred eighty-three".