4020532513 has 4 divisors (see below), whose sum is σ = 4028249988. Its totient is φ = 4012815040.

The previous prime is 4020532511. The next prime is 4020532531. The reversal of 4020532513 is 3152350204.

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 904325184 + 3116207329 = 30072^2 + 55823^2 .

It is a cyclic number.

It is not a de Polignac number, because 4020532513 - 2¹ = 4020532511 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4020532511) 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, 3857956 + ... + 3858997.

It is an arithmetic number, because the mean of its divisors is an integer number (1007062497).

Almost surely, 2^4020532513 is an apocalyptic number.

It is an amenable number.

4020532513 is a deficient number, since it is larger than the sum of its proper divisors (7717475).

4020532513 is an equidigital number, since it uses as much as digits as its factorization.

4020532513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7717474.

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 4020532513 is about 63407.6691970301. The cubic root of 4020532513 is about 1590.1125288553.

Adding to 4020532513 its reverse (3152350204), we get a palindrome (7172882717).

The spelling of 4020532513 in words is "four billion, twenty million, five hundred thirty-two thousand, five hundred thirteen".