8180868493 has 8 divisors (see below), whose sum is σ = 9353117312. Its totient is φ = 7009508016.

The previous prime is 8180868481. The next prime is 8180868559. The reversal of 8180868493 is 3948680818.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 8180868493 - 2²⁵ = 8147314061 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8180862493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 202230 + ... + 239287.

It is an arithmetic number, because the mean of its divisors is an integer number (1169139664).

Almost surely, 2^8180868493 is an apocalyptic number.

It is an amenable number.

8180868493 is a deficient number, since it is larger than the sum of its proper divisors (1172248819).

8180868493 is a wasteful number, since it uses less digits than its factorization.

8180868493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 444171.

The product of its (nonzero) digits is 2654208, while the sum is 55.

The square root of 8180868493 is about 90448.1536185234. The cubic root of 8180868493 is about 2014.9601917316.

The spelling of 8180868493 in words is "eight billion, one hundred eighty million, eight hundred sixty-eight thousand, four hundred ninety-three".