8081138946 has 16 divisors (see below), whose sum is σ = 16343877600. Its totient is φ = 2663446368.

The previous prime is 8081138939. The next prime is 8081138959. The reversal of 8081138946 is 6498311808.

It is a junction number, because it is equal to n+sod(n) for n = 8081138895 and 8081138904.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7566076 + ... + 7567143.

It is an arithmetic number, because the mean of its divisors is an integer number (1021492350).

Almost surely, 2^8081138946 is an apocalyptic number.

8081138946 is an abundant number, since it is smaller than the sum of its proper divisors (8262738654).

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

8081138946 is a wasteful number, since it uses less digits than its factorization.

8081138946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15133313.

The product of its (nonzero) digits is 331776, while the sum is 48.

The square root of 8081138946 is about 89895.1552977133. The cubic root of 8081138946 is about 2006.7388472998.

The spelling of 8081138946 in words is "eight billion, eighty-one million, one hundred thirty-eight thousand, nine hundred forty-six".