8245189493 has 2 divisors, whose sum is σ = 8245189494. Its totient is φ = 8245189492.

The previous prime is 8245189481. The next prime is 8245189529. The reversal of 8245189493 is 3949815428.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7754035249 + 491154244 = 88057^2 + 22162^2 .

It is a cyclic number.

It is not a de Polignac number, because 8245189493 - 2¹² = 8245185397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8245189453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4122594746 + 4122594747.

It is an arithmetic number, because the mean of its divisors is an integer number (4122594747).

Almost surely, 2^8245189493 is an apocalyptic number.

It is an amenable number.

8245189493 is a deficient number, since it is larger than the sum of its proper divisors (1).

8245189493 is an equidigital number, since it uses as much as digits as its factorization.

8245189493 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2488320, while the sum is 53.

The square root of 8245189493 is about 90803.0257920957. The cubic root of 8245189493 is about 2020.2271983283.

The spelling of 8245189493 in words is "eight billion, two hundred forty-five million, one hundred eighty-nine thousand, four hundred ninety-three".