7282221493 has 2 divisors, whose sum is σ = 7282221494. Its totient is φ = 7282221492.

The previous prime is 7282221481. The next prime is 7282221509. The reversal of 7282221493 is 3941222827.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4233193969 + 3049027524 = 65063^2 + 55218^2 .

It is an emirp because it is prime and its reverse (3941222827) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7282221493 - 2⁵ = 7282221461 is a prime.

It is a super-2 number, since 2×7282221493² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7280221493) 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, 3641110746 + 3641110747.

It is an arithmetic number, because the mean of its divisors is an integer number (3641110747).

Almost surely, 2^7282221493 is an apocalyptic number.

It is an amenable number.

7282221493 is a deficient number, since it is larger than the sum of its proper divisors (1).

7282221493 is an equidigital number, since it uses as much as digits as its factorization.

7282221493 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 96768, while the sum is 40.

The square root of 7282221493 is about 85335.9331876086. The cubic root of 7282221493 is about 1938.3013342272.

The spelling of 7282221493 in words is "seven billion, two hundred eighty-two million, two hundred twenty-one thousand, four hundred ninety-three".