2172744634 has 16 divisors (see below), whose sum is σ = 3419619840. Its totient is φ = 1033393680.

The previous prime is 2172744617. The next prime is 2172744643. The reversal of 2172744634 is 4364472712.

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, 122154 + ... + 138805.

It is an arithmetic number, because the mean of its divisors is an integer number (213726240).

Almost surely, 2^2172744634 is an apocalyptic number.

2172744634 is a deficient number, since it is larger than the sum of its proper divisors (1246875206).

2172744634 is a wasteful number, since it uses less digits than its factorization.

2172744634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261165.

The product of its digits is 225792, while the sum is 40.

The square root of 2172744634 is about 46612.7089322215. The cubic root of 2172744634 is about 1295.1981895307.

The spelling of 2172744634 in words is "two billion, one hundred seventy-two million, seven hundred forty-four thousand, six hundred thirty-four".