2009633772 has 18 divisors (see below), whose sum is σ = 4689507844. Its totient is φ = 669826160.

The previous prime is 2009633761. The next prime is 2009633779. The reversal of 2009633772 is 2773369002.

It is a self number, because there is not a number n which added to its sum of digits gives 2009633772.

It is not an unprimeable number, because it can be changed into a prime (2009633779) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 148822 + ... + 161762.

Almost surely, 2^2009633772 is an apocalyptic number.

It is an amenable number.

2009633772 is an abundant number, since it is smaller than the sum of its proper divisors (2679874072).

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

2009633772 is an frugal number, since it uses more digits than its factorization.

2009633772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25889 (or 12946 counting only the distinct ones).

The product of its (nonzero) digits is 95256, while the sum is 39.

The square root of 2009633772 is about 44828.9390014977. The cubic root of 2009633772 is about 1261.9407757835.

The spelling of 2009633772 in words is "two billion, nine million, six hundred thirty-three thousand, seven hundred seventy-two".