8081340990 has 32 divisors (see below), whose sum is σ = 19441537920. Its totient is φ = 2149877664.

The previous prime is 8081340947. The next prime is 8081340997. The reversal of 8081340990 is 990431808.

It is a super-3 number, since 3×8081340990³ (a number of 31 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8081340997) 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, 308884 + ... + 334023.

It is an arithmetic number, because the mean of its divisors is an integer number (607548060).

Almost surely, 2^8081340990 is an apocalyptic number.

8081340990 is an abundant number, since it is smaller than the sum of its proper divisors (11360196930).

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

8081340990 is a wasteful number, since it uses less digits than its factorization.

8081340990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 643336.

The product of its (nonzero) digits is 62208, while the sum is 42.

The square root of 8081340990 is about 89896.2790664886. The cubic root of 8081340990 is about 2006.7555712693.

The spelling of 8081340990 in words is "eight billion, eighty-one million, three hundred forty thousand, nine hundred ninety".