2781058979 has 2 divisors, whose sum is σ = 2781058980. Its totient is φ = 2781058978.

The previous prime is 2781058957. The next prime is 2781058993. The reversal of 2781058979 is 9798501872.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2781058979 is a prime.

It is not a weakly prime, because it can be changed into another prime (2781058939) by changing a digit.

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, 1390529489 + 1390529490.

It is an arithmetic number, because the mean of its divisors is an integer number (1390529490).

Almost surely, 2^2781058979 is an apocalyptic number.

2781058979 is a deficient number, since it is larger than the sum of its proper divisors (1).

2781058979 is an equidigital number, since it uses as much as digits as its factorization.

2781058979 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2540160, while the sum is 56.

The square root of 2781058979 is about 52735.7466904566. The cubic root of 2781058979 is about 1406.2743855024.

The spelling of 2781058979 in words is "two billion, seven hundred eighty-one million, fifty-eight thousand, nine hundred seventy-nine".