2175234816 has 72 divisors (see below), whose sum is σ = 5808434800. Its totient is φ = 722681856.

The previous prime is 2175234799. The next prime is 2175234823. The reversal of 2175234816 is 6184325712.

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, 235860 + ... + 244908.

Almost surely, 2^2175234816 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2175234816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2904217400).

2175234816 is an abundant number, since it is smaller than the sum of its proper divisors (3633199984).

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

2175234816 is an equidigital number, since it uses as much as digits as its factorization.

2175234816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9381 (or 9367 counting only the distinct ones).

The product of its digits is 80640, while the sum is 39.

The square root of 2175234816 is about 46639.4126892696. The cubic root of 2175234816 is about 1295.6928093750.

The spelling of 2175234816 in words is "two billion, one hundred seventy-five million, two hundred thirty-four thousand, eight hundred sixteen".