8101640530 has 32 divisors (see below), whose sum is σ = 15446810160. Its totient is φ = 3048837120.

The previous prime is 8101640453. The next prime is 8101640531. The reversal of 8101640530 is 350461018.

It can be written as a sum of positive squares in 8 ways, for example, as 6318183169 + 1783457361 = 79487^2 + 42231^2 .

It is not an unprimeable number, because it can be changed into a prime (8101640531) 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 in 15 ways as a sum of consecutive naturals, for example, 512586 + ... + 528154.

Almost surely, 2^8101640530 is an apocalyptic number.

8101640530 is a deficient number, since it is larger than the sum of its proper divisors (7345169630).

8101640530 is a wasteful number, since it uses less digits than its factorization.

8101640530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18654.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 8101640530 is about 90009.1135941245. The cubic root of 8101640530 is about 2008.4344244074.

The spelling of 8101640530 in words is "eight billion, one hundred one million, six hundred forty thousand, five hundred thirty".