8181232942 has 16 divisors (see below), whose sum is σ = 12602221632. Its totient is φ = 3981454560.

The previous prime is 8181232931. The next prime is 8181232951. The reversal of 8181232942 is 2492321818.

It is a junction number, because it is equal to n+sod(n) for n = 8181232895 and 8181232904.

It is a congruent number.

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, 223413 + ... + 257440.

It is an arithmetic number, because the mean of its divisors is an integer number (787638852).

Almost surely, 2^8181232942 is an apocalyptic number.

8181232942 is a deficient number, since it is larger than the sum of its proper divisors (4420988690).

8181232942 is a wasteful number, since it uses less digits than its factorization.

8181232942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 481083.

The product of its digits is 55296, while the sum is 40.

The square root of 8181232942 is about 90450.1682806616. The cubic root of 8181232942 is about 2014.9901127326.

The spelling of 8181232942 in words is "eight billion, one hundred eighty-one million, two hundred thirty-two thousand, nine hundred forty-two".