2172644194 has 16 divisors (see below), whose sum is σ = 3730564800. Its totient is φ = 929625264.

The previous prime is 2172644191. The next prime is 2172644297. The reversal of 2172644194 is 4914462712.

It is not an unprimeable number, because it can be changed into a prime (2172644191) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 116689 + ... + 134020.

It is an arithmetic number, because the mean of its divisors is an integer number (233160300).

Almost surely, 2^2172644194 is an apocalyptic number.

2172644194 is a deficient number, since it is larger than the sum of its proper divisors (1557920606).

2172644194 is a wasteful number, since it uses less digits than its factorization.

2172644194 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251337.

The product of its digits is 96768, while the sum is 40.

The square root of 2172644194 is about 46611.6315311962. The cubic root of 2172644194 is about 1295.1782314081.

The spelling of 2172644194 in words is "two billion, one hundred seventy-two million, six hundred forty-four thousand, one hundred ninety-four".