7156990289 has 2 divisors, whose sum is σ = 7156990290. Its totient is φ = 7156990288.

The previous prime is 7156990279. The next prime is 7156990297. The reversal of 7156990289 is 9820996517.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6992304400 + 164685889 = 83620^2 + 12833^2 .

It is an emirp because it is prime and its reverse (9820996517) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7156990289 - 2⁸ = 7156990033 is a prime.

It is not a weakly prime, because it can be changed into another prime (7156990229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3578495144 + 3578495145.

It is an arithmetic number, because the mean of its divisors is an integer number (3578495145).

Almost surely, 2^7156990289 is an apocalyptic number.

It is an amenable number.

7156990289 is a deficient number, since it is larger than the sum of its proper divisors (1).

7156990289 is an equidigital number, since it uses as much as digits as its factorization.

7156990289 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2449440, while the sum is 56.

The square root of 7156990289 is about 84598.9969739594. The cubic root of 7156990289 is about 1927.1261414410.

The spelling of 7156990289 in words is "seven billion, one hundred fifty-six million, nine hundred ninety thousand, two hundred eighty-nine".