7213893493 has 2 divisors, whose sum is σ = 7213893494. Its totient is φ = 7213893492.

The previous prime is 7213893469. The next prime is 7213893541. The reversal of 7213893493 is 3943983127.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6649260849 + 564632644 = 81543^2 + 23762^2 .

It is a cyclic number.

It is not a de Polignac number, because 7213893493 - 2²¹ = 7211796341 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7213893403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3606946746 + 3606946747.

It is an arithmetic number, because the mean of its divisors is an integer number (3606946747).

Almost surely, 2^7213893493 is an apocalyptic number.

It is an amenable number.

7213893493 is a deficient number, since it is larger than the sum of its proper divisors (1).

7213893493 is an equidigital number, since it uses as much as digits as its factorization.

7213893493 is an evil number, because the sum of its binary digits is even.

The product of its digits is 979776, while the sum is 49.

The square root of 7213893493 is about 84934.6424787907. The cubic root of 7213893493 is about 1932.2200100552.

The spelling of 7213893493 in words is "seven billion, two hundred thirteen million, eight hundred ninety-three thousand, four hundred ninety-three".