8163132440 has 32 divisors (see below), whose sum is σ = 18440246160. Its totient is φ = 3252240000.

The previous prime is 8163132433. The next prime is 8163132499. The reversal of 8163132440 is 442313618.

It is a junction number, because it is equal to n+sod(n) for n = 8163132397 and 8163132406.

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, 396491 + ... + 416570.

Almost surely, 2^8163132440 is an apocalyptic number.

It is an amenable number.

8163132440 is an abundant number, since it is smaller than the sum of its proper divisors (10277113720).

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

8163132440 is a wasteful number, since it uses less digits than its factorization.

8163132440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 813323 (or 813319 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 32.

The square root of 8163132440 is about 90350.0550082843. The cubic root of 8163132440 is about 2013.5029993365.

The spelling of 8163132440 in words is "eight billion, one hundred sixty-three million, one hundred thirty-two thousand, four hundred forty".