4541780909 has 4 divisors (see below), whose sum is σ = 4542162780. Its totient is φ = 4541399040.

The previous prime is 4541780839. The next prime is 4541780923. The reversal of 4541780909 is 9090871454.

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

It can be written as a sum of positive squares in 2 ways, for example, as 2801055625 + 1740725284 = 52925^2 + 41722^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4541780909 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 (4541780609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 172502 + ... + 197079.

It is an arithmetic number, because the mean of its divisors is an integer number (1135540695).

Almost surely, 2^4541780909 is an apocalyptic number.

It is an amenable number.

4541780909 is a deficient number, since it is larger than the sum of its proper divisors (381871).

4541780909 is a wasteful number, since it uses less digits than its factorization.

4541780909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 381870.

The product of its (nonzero) digits is 362880, while the sum is 47.

The square root of 4541780909 is about 67392.7363222477. The cubic root of 4541780909 is about 1656.0574299447.

The spelling of 4541780909 in words is "four billion, five hundred forty-one million, seven hundred eighty thousand, nine hundred nine".