7985398633 has 2 divisors, whose sum is σ = 7985398634. Its totient is φ = 7985398632.

The previous prime is 7985398583. The next prime is 7985398649. The reversal of 7985398633 is 3368935897.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7904632464 + 80766169 = 88908^2 + 8987^2 .

It is an emirp because it is prime and its reverse (3368935897) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7985398633 - 2⁹ = 7985398121 is a prime.

It is not a weakly prime, because it can be changed into another prime (7985398433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3992699316 + 3992699317.

It is an arithmetic number, because the mean of its divisors is an integer number (3992699317).

Almost surely, 2^7985398633 is an apocalyptic number.

It is an amenable number.

7985398633 is a deficient number, since it is larger than the sum of its proper divisors (1).

7985398633 is an equidigital number, since it uses as much as digits as its factorization.

7985398633 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 29393280, while the sum is 61.

The square root of 7985398633 is about 89361.0576985300. The cubic root of 7985398633 is about 1998.7824783876.

The spelling of 7985398633 in words is "seven billion, nine hundred eighty-five million, three hundred ninety-eight thousand, six hundred thirty-three".