8736523993 has 2 divisors, whose sum is σ = 8736523994. Its totient is φ = 8736523992.

The previous prime is 8736523981. The next prime is 8736524023. The reversal of 8736523993 is 3993256378.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7403397849 + 1333126144 = 86043^2 + 36512^2 .

It is a cyclic number.

It is not a de Polignac number, because 8736523993 - 2²⁹ = 8199653081 is a prime.

It is not a weakly prime, because it can be changed into another prime (8736523793) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4368261996 + 4368261997.

It is an arithmetic number, because the mean of its divisors is an integer number (4368261997).

Almost surely, 2^8736523993 is an apocalyptic number.

It is an amenable number.

8736523993 is a deficient number, since it is larger than the sum of its proper divisors (1).

8736523993 is an equidigital number, since it uses as much as digits as its factorization.

8736523993 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7348320, while the sum is 55.

The square root of 8736523993 is about 93469.3746261309. The cubic root of 8736523993 is about 2059.5842307453.

The spelling of 8736523993 in words is "eight billion, seven hundred thirty-six million, five hundred twenty-three thousand, nine hundred ninety-three".