2009936745 has 24 divisors (see below), whose sum is σ = 3564914496. Its totient is φ = 1047035808.

The previous prime is 2009936737. The next prime is 2009936749. The reversal of 2009936745 is 5476399002.

It is a happy number.

It is not a de Polignac number, because 2009936745 - 2³ = 2009936737 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 2009936745.

It is not an unprimeable number, because it can be changed into a prime (2009936749) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 517429 + ... + 521298.

It is an arithmetic number, because the mean of its divisors is an integer number (148538104).

Almost surely, 2^2009936745 is an apocalyptic number.

It is an amenable number.

2009936745 is a deficient number, since it is larger than the sum of its proper divisors (1554977751).

2009936745 is a wasteful number, since it uses less digits than its factorization.

2009936745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1038781 (or 1038778 counting only the distinct ones).

The product of its (nonzero) digits is 408240, while the sum is 45.

The square root of 2009936745 is about 44832.3180863983. The cubic root of 2009936745 is about 1262.0041894555.

The spelling of 2009936745 in words is "two billion, nine million, nine hundred thirty-six thousand, seven hundred forty-five".