7213622849 has 2 divisors, whose sum is σ = 7213622850. Its totient is φ = 7213622848.

The previous prime is 7213622831. The next prime is 7213622879. The reversal of 7213622849 is 9482263127.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4871062849 + 2342560000 = 69793^2 + 48400^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7213622849 is a prime.

It is a super-2 number, since 2×7213622849² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (7213622809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3606811424 + 3606811425.

It is an arithmetic number, because the mean of its divisors is an integer number (3606811425).

Almost surely, 2^7213622849 is an apocalyptic number.

It is an amenable number.

7213622849 is a deficient number, since it is larger than the sum of its proper divisors (1).

7213622849 is an equidigital number, since it uses as much as digits as its factorization.

7213622849 is an evil number, because the sum of its binary digits is even.

The product of its digits is 290304, while the sum is 44.

The square root of 7213622849 is about 84933.0492152495. The cubic root of 7213622849 is about 1932.1958460217.

The spelling of 7213622849 in words is "seven billion, two hundred thirteen million, six hundred twenty-two thousand, eight hundred forty-nine".