7216364489 has 2 divisors, whose sum is σ = 7216364490. Its totient is φ = 7216364488.

The previous prime is 7216364431. The next prime is 7216364509. The reversal of 7216364489 is 9844636127.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7209368464 + 6996025 = 84908^2 + 2645^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7216364489 is a prime.

It is a super-2 number, since 2×7216364489² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (7216366489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3608182244 + 3608182245.

It is an arithmetic number, because the mean of its divisors is an integer number (3608182245).

Almost surely, 2^7216364489 is an apocalyptic number.

It is an amenable number.

7216364489 is a deficient number, since it is larger than the sum of its proper divisors (1).

7216364489 is an equidigital number, since it uses as much as digits as its factorization.

7216364489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1741824, while the sum is 50.

The square root of 7216364489 is about 84949.1876888767. The cubic root of 7216364489 is about 1932.4406011910.

The spelling of 7216364489 in words is "seven billion, two hundred sixteen million, three hundred sixty-four thousand, four hundred eighty-nine".