2172163436 has 24 divisors (see below), whose sum is σ = 3905260800. Its totient is φ = 1056528000.

The previous prime is 2172163379. The next prime is 2172163463. The reversal of 2172163436 is 6343612712.

It is a junction number, because it is equal to n+sod(n) for n = 2172163396 and 2172163405.

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, 38261 + ... + 76211.

It is an arithmetic number, because the mean of its divisors is an integer number (162719200).

Almost surely, 2^2172163436 is an apocalyptic number.

It is an amenable number.

2172163436 is a deficient number, since it is larger than the sum of its proper divisors (1733097364).

2172163436 is a wasteful number, since it uses less digits than its factorization.

2172163436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38345 (or 38343 counting only the distinct ones).

The product of its digits is 36288, while the sum is 35.

The square root of 2172163436 is about 46606.4741854605. The cubic root of 2172163436 is about 1295.0826929500.

The spelling of 2172163436 in words is "two billion, one hundred seventy-two million, one hundred sixty-three thousand, four hundred thirty-six".