8533453993 has 2 divisors, whose sum is σ = 8533453994. Its totient is φ = 8533453992.

The previous prime is 8533453987. The next prime is 8533454071. The reversal of 8533453993 is 3993543358.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8159147584 + 374306409 = 90328^2 + 19347^2 .

It is a cyclic number.

It is not a de Polignac number, because 8533453993 - 2¹³ = 8533445801 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 8533453993.

It is not a weakly prime, because it can be changed into another prime (8533423993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4266726996 + 4266726997.

It is an arithmetic number, because the mean of its divisors is an integer number (4266726997).

Almost surely, 2^8533453993 is an apocalyptic number.

It is an amenable number.

8533453993 is a deficient number, since it is larger than the sum of its proper divisors (1).

8533453993 is an equidigital number, since it uses as much as digits as its factorization.

8533453993 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5248800, while the sum is 52.

The square root of 8533453993 is about 92376.6961576349. The cubic root of 8533453993 is about 2043.5014511958.

The spelling of 8533453993 in words is "eight billion, five hundred thirty-three million, four hundred fifty-three thousand, nine hundred ninety-three".