7218253673 has 2 divisors, whose sum is σ = 7218253674. Its totient is φ = 7218253672.

The previous prime is 7218253607. The next prime is 7218253711. The reversal of 7218253673 is 3763528127.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3810963289 + 3407290384 = 61733^2 + 58372^2 .

It is an emirp because it is prime and its reverse (3763528127) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7218253673 - 2¹⁴ = 7218237289 is a prime.

It is not a weakly prime, because it can be changed into another prime (7218253573) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3609126836 + 3609126837.

It is an arithmetic number, because the mean of its divisors is an integer number (3609126837).

Almost surely, 2^7218253673 is an apocalyptic number.

It is an amenable number.

7218253673 is a deficient number, since it is larger than the sum of its proper divisors (1).

7218253673 is an equidigital number, since it uses as much as digits as its factorization.

7218253673 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 423360, while the sum is 44.

The square root of 7218253673 is about 84960.3064554266. The cubic root of 7218253673 is about 1932.6092187518.

The spelling of 7218253673 in words is "seven billion, two hundred eighteen million, two hundred fifty-three thousand, six hundred seventy-three".