2172134816 has 24 divisors (see below), whose sum is σ = 4314241764. Its totient is φ = 1076454400.

The previous prime is 2172134803. The next prime is 2172134821. The reversal of 2172134816 is 6184312712.

It can be written as a sum of positive squares in 2 ways, for example, as 1988803216 + 183331600 = 44596^2 + 13540^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 296735 + ... + 303966.

Almost surely, 2^2172134816 is an apocalyptic number.

It is an amenable number.

2172134816 is a deficient number, since it is larger than the sum of its proper divisors (2142106948).

2172134816 is a wasteful number, since it uses less digits than its factorization.

2172134816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 600824 (or 600816 counting only the distinct ones).

The product of its digits is 16128, while the sum is 35.

The square root of 2172134816 is about 46606.1671455613. The cubic root of 2172134816 is about 1295.0770050064.

The spelling of 2172134816 in words is "two billion, one hundred seventy-two million, one hundred thirty-four thousand, eight hundred sixteen".