8636745109 has 4 divisors (see below), whose sum is σ = 8704751104. Its totient is φ = 8568739116.

The previous prime is 8636745083. The next prime is 8636745137. The reversal of 8636745109 is 9015476368.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 8636745109 - 2¹¹ = 8636743061 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8636745199) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34002807 + ... + 34003060.

It is an arithmetic number, because the mean of its divisors is an integer number (2176187776).

Almost surely, 2^8636745109 is an apocalyptic number.

It is an amenable number.

8636745109 is a deficient number, since it is larger than the sum of its proper divisors (68005995).

8636745109 is a wasteful number, since it uses less digits than its factorization.

8636745109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68005994.

The product of its (nonzero) digits is 1088640, while the sum is 49.

The square root of 8636745109 is about 92934.0901338147. The cubic root of 8636745109 is about 2051.7134284016.

The spelling of 8636745109 in words is "eight billion, six hundred thirty-six million, seven hundred forty-five thousand, one hundred nine".