2663978413 has 2 divisors, whose sum is σ = 2663978414. Its totient is φ = 2663978412.

The previous prime is 2663978407. The next prime is 2663978431. The reversal of 2663978413 is 3148793662.

Together with next prime (2663978431) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1821411684 + 842566729 = 42678^2 + 29027^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2663978413 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2663978113) 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, 1331989206 + 1331989207.

It is an arithmetic number, because the mean of its divisors is an integer number (1331989207).

Almost surely, 2^2663978413 is an apocalyptic number.

It is an amenable number.

2663978413 is a deficient number, since it is larger than the sum of its proper divisors (1).

2663978413 is an equidigital number, since it uses as much as digits as its factorization.

2663978413 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1306368, while the sum is 49.

The square root of 2663978413 is about 51613.7424820173. The cubic root of 2663978413 is about 1386.2564092815.

The spelling of 2663978413 in words is "two billion, six hundred sixty-three million, nine hundred seventy-eight thousand, four hundred thirteen".