8613810945 has 40 divisors (see below), whose sum is σ = 15448278120. Its totient is φ = 4591883520.

The previous prime is 8613810943. The next prime is 8613810967. The reversal of 8613810945 is 5490183168.

It can be written as a sum of positive squares in 4 ways, for example, as 668584449 + 7945226496 = 25857^2 + 89136^2 .

It is not a de Polignac number, because 8613810945 - 2¹ = 8613810943 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 8613810945.

It is not an unprimeable number, because it can be changed into a prime (8613810943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1255725 + ... + 1262565.

It is an arithmetic number, because the mean of its divisors is an integer number (386206953).

Almost surely, 2^8613810945 is an apocalyptic number.

It is an amenable number.

8613810945 is a deficient number, since it is larger than the sum of its proper divisors (6834467175).

8613810945 is a wasteful number, since it uses less digits than its factorization.

8613810945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9967 (or 9958 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 45.

The square root of 8613810945 is about 92810.6187082060. The cubic root of 8613810945 is about 2049.8957666614.

The spelling of 8613810945 in words is "eight billion, six hundred thirteen million, eight hundred ten thousand, nine hundred forty-five".