7639946213 has 2 divisors, whose sum is σ = 7639946214. Its totient is φ = 7639946212.

The previous prime is 7639946201. The next prime is 7639946231. The reversal of 7639946213 is 3126499367.

Together with next prime (7639946231) 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., 6310395844 + 1329550369 = 79438^2 + 36463^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7639946213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7639946233) 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, 3819973106 + 3819973107.

It is an arithmetic number, because the mean of its divisors is an integer number (3819973107).

Almost surely, 2^7639946213 is an apocalyptic number.

It is an amenable number.

7639946213 is a deficient number, since it is larger than the sum of its proper divisors (1).

7639946213 is an equidigital number, since it uses as much as digits as its factorization.

7639946213 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1469664, while the sum is 50.

The square root of 7639946213 is about 87406.7858521294. The cubic root of 7639946213 is about 1969.5337789767.

The spelling of 7639946213 in words is "seven billion, six hundred thirty-nine million, nine hundred forty-six thousand, two hundred thirteen".