7213742993 has 2 divisors, whose sum is σ = 7213742994. Its totient is φ = 7213742992.

The previous prime is 7213742983. The next prime is 7213743049. The reversal of 7213742993 is 3992473127.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5171335744 + 2042407249 = 71912^2 + 45193^2 .

It is an emirp because it is prime and its reverse (3992473127) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7213742993 - 2¹² = 7213738897 is a prime.

It is not a weakly prime, because it can be changed into another prime (7213742903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3606871496 + 3606871497.

It is an arithmetic number, because the mean of its divisors is an integer number (3606871497).

Almost surely, 2^7213742993 is an apocalyptic number.

It is an amenable number.

7213742993 is a deficient number, since it is larger than the sum of its proper divisors (1).

7213742993 is an equidigital number, since it uses as much as digits as its factorization.

7213742993 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 571536, while the sum is 47.

The square root of 7213742993 is about 84933.7564988150. The cubic root of 7213742993 is about 1932.2065729687.

The spelling of 7213742993 in words is "seven billion, two hundred thirteen million, seven hundred forty-two thousand, nine hundred ninety-three".