2909745903 has 4 divisors (see below), whose sum is σ = 3879661208. Its totient is φ = 1939830600.

The previous prime is 2909745869. The next prime is 2909745913. The reversal of 2909745903 is 3095479092.

It is a semiprime because it is the product of two primes.

It is a de Polignac number, because none of the positive numbers 2^k-2909745903 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2909745913) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 484957648 + ... + 484957653.

It is an arithmetic number, because the mean of its divisors is an integer number (969915302).

Almost surely, 2^2909745903 is an apocalyptic number.

2909745903 is a deficient number, since it is larger than the sum of its proper divisors (969915305).

2909745903 is an equidigital number, since it uses as much as digits as its factorization.

2909745903 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 969915304.

The product of its (nonzero) digits is 612360, while the sum is 48.

The square root of 2909745903 is about 53942.0606113634. The cubic root of 2909745903 is about 1427.6388412000.

The spelling of 2909745903 in words is "two billion, nine hundred nine million, seven hundred forty-five thousand, nine hundred three".