8180868507 has 16 divisors (see below), whose sum is σ = 12521994240. Its totient is φ = 4653816192.

The previous prime is 8180868481. The next prime is 8180868559. The reversal of 8180868507 is 7058680818.

It is a happy number.

It is not a de Polignac number, because 8180868507 - 2¹¹ = 8180866459 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 8180868507.

It is not an unprimeable number, because it can be changed into a prime (8180868587) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 868782 + ... + 878147.

It is an arithmetic number, because the mean of its divisors is an integer number (782624640).

Almost surely, 2^8180868507 is an apocalyptic number.

8180868507 is a deficient number, since it is larger than the sum of its proper divisors (4341125733).

8180868507 is a wasteful number, since it uses less digits than its factorization.

8180868507 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1747162.

The product of its (nonzero) digits is 860160, while the sum is 51.

The square root of 8180868507 is about 90448.1536959158. The cubic root of 8180868507 is about 2014.9601928810.

The spelling of 8180868507 in words is "eight billion, one hundred eighty million, eight hundred sixty-eight thousand, five hundred seven".