2945749172 has 12 divisors (see below), whose sum is σ = 5155576356. Its totient is φ = 1472727360.

The previous prime is 2945749159. The next prime is 2945749193. The reversal of 2945749172 is 2719475492.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 2089952656 + 855796516 = 45716^2 + 29254^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2945749172.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16928 + ... + 78600.

It is an arithmetic number, because the mean of its divisors is an integer number (429631363).

Almost surely, 2^2945749172 is an apocalyptic number.

It is an amenable number.

2945749172 is a deficient number, since it is larger than the sum of its proper divisors (2209827184).

2945749172 is a wasteful number, since it uses less digits than its factorization.

2945749172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73618 (or 73616 counting only the distinct ones).

The product of its digits is 1270080, while the sum is 50.

The square root of 2945749172 is about 54274.7563053027. The cubic root of 2945749172 is about 1433.5029403526.

The spelling of 2945749172 in words is "two billion, nine hundred forty-five million, seven hundred forty-nine thousand, one hundred seventy-two".