2681430949 has 2 divisors, whose sum is σ = 2681430950. Its totient is φ = 2681430948.

The previous prime is 2681430929. The next prime is 2681430967. The reversal of 2681430949 is 9490341862.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1620626049 + 1060804900 = 40257^2 + 32570^2 .

It is a cyclic number.

It is not a de Polignac number, because 2681430949 - 2⁷ = 2681430821 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2681430899 and 2681430908.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2681430929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1340715474 + 1340715475.

It is an arithmetic number, because the mean of its divisors is an integer number (1340715475).

Almost surely, 2^2681430949 is an apocalyptic number.

It is an amenable number.

2681430949 is a deficient number, since it is larger than the sum of its proper divisors (1).

2681430949 is an equidigital number, since it uses as much as digits as its factorization.

2681430949 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 373248, while the sum is 46.

The square root of 2681430949 is about 51782.5351735506. The cubic root of 2681430949 is about 1389.2770854015.

The spelling of 2681430949 in words is "two billion, six hundred eighty-one million, four hundred thirty thousand, nine hundred forty-nine".