8642181730 has 96 divisors (see below), whose sum is σ = 20264688000. Its totient is φ = 2591087616.

The previous prime is 8642181689. The next prime is 8642181733. The reversal of 8642181730 is 371812468.

It is not an unprimeable number, because it can be changed into a prime (8642181733) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 205546 + ... + 243994.

It is an arithmetic number, because the mean of its divisors is an integer number (211090500).

Almost surely, 2^8642181730 is an apocalyptic number.

8642181730 is an abundant number, since it is smaller than the sum of its proper divisors (11622506270).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8642181730 is a wasteful number, since it uses less digits than its factorization.

8642181730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38508 (or 38495 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 40.

The square root of 8642181730 is about 92963.3354070302. The cubic root of 8642181730 is about 2052.1438393383.

The spelling of 8642181730 in words is "eight billion, six hundred forty-two million, one hundred eighty-one thousand, seven hundred thirty".