2172234378 has 16 divisors (see below), whose sum is σ = 4347396576. Its totient is φ = 723590160.

The previous prime is 2172234367. The next prime is 2172234409. The reversal of 2172234378 is 8734322712.

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, 112288 + ... + 130203.

It is an arithmetic number, because the mean of its divisors is an integer number (271712286).

Almost surely, 2^2172234378 is an apocalyptic number.

2172234378 is an abundant number, since it is smaller than the sum of its proper divisors (2175162198).

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

2172234378 is a wasteful number, since it uses less digits than its factorization.

2172234378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 243989.

The product of its digits is 112896, while the sum is 39.

The square root of 2172234378 is about 46607.2352537672. The cubic root of 2172234378 is about 1295.0967917596.

The spelling of 2172234378 in words is "two billion, one hundred seventy-two million, two hundred thirty-four thousand, three hundred seventy-eight".