4052020509 has 12 divisors (see below), whose sum is σ = 6041722752. Its totient is φ = 2614206600.

The previous prime is 4052020487. The next prime is 4052020559. The reversal of 4052020509 is 9050202504.

4052020509 is a `hidden beast` number, since 405 + 202 + 0 + 50 + 9 = 666.

It is not a de Polignac number, because 4052020509 - 2⁵ = 4052020477 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4052020559) 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 11 ways as a sum of consecutive naturals, for example, 7261407 + ... + 7261964.

It is an arithmetic number, because the mean of its divisors is an integer number (503476896).

Almost surely, 2^4052020509 is an apocalyptic number.

It is an amenable number.

4052020509 is a deficient number, since it is larger than the sum of its proper divisors (1989702243).

4052020509 is a wasteful number, since it uses less digits than its factorization.

4052020509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14523408 (or 14523405 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 4052020509 is about 63655.4829453049. The cubic root of 4052020509 is about 1594.2528851620.

The spelling of 4052020509 in words is "four billion, fifty-two million, twenty thousand, five hundred nine".