2163181460 has 24 divisors (see below), whose sum is σ = 4955652576. Its totient is φ = 786611360.

The previous prime is 2163181453. The next prime is 2163181511. The reversal of 2163181460 is 641813612.

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, 4916102 + ... + 4916541.

It is an arithmetic number, because the mean of its divisors is an integer number (206485524).

Almost surely, 2^2163181460 is an apocalyptic number.

2163181460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2163181460 is an abundant number, since it is smaller than the sum of its proper divisors (2792471116).

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

2163181460 is a wasteful number, since it uses less digits than its factorization.

2163181460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9832663 (or 9832661 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 2163181460 is about 46510.0146205094. The cubic root of 2163181460 is about 1293.2951552540.

The spelling of 2163181460 in words is "two billion, one hundred sixty-three million, one hundred eighty-one thousand, four hundred sixty".