6538494793 has 2 divisors, whose sum is σ = 6538494794. Its totient is φ = 6538494792.

The previous prime is 6538494727. The next prime is 6538494829. The reversal of 6538494793 is 3974948356.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6121028169 + 417466624 = 78237^2 + 20432^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6538494793 is a prime.

It is a super-2 number, since 2×6538494793² = 85503828316176225698, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (6538495793) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3269247396 + 3269247397.

It is an arithmetic number, because the mean of its divisors is an integer number (3269247397).

Almost surely, 2^6538494793 is an apocalyptic number.

It is an amenable number.

6538494793 is a deficient number, since it is larger than the sum of its proper divisors (1).

6538494793 is an equidigital number, since it uses as much as digits as its factorization.

6538494793 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 19595520, while the sum is 58.

The square root of 6538494793 is about 80860.9596344243. The cubic root of 6538494793 is about 1869.9324894842.

The spelling of 6538494793 in words is "six billion, five hundred thirty-eight million, four hundred ninety-four thousand, seven hundred ninety-three".