520019867 has 8 divisors (see below), whose sum is σ = 535700592. Its totient is φ = 504424800.

The previous prime is 520019861. The next prime is 520019869. The reversal of 520019867 is 768910025.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 520019867 - 2¹⁴ = 520003483 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 520019867.

It is not an unprimeable number, because it can be changed into a prime (520019861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8984 + ... + 33477.

It is an arithmetic number, because the mean of its divisors is an integer number (66962574).

Almost surely, 2^520019867 is an apocalyptic number.

520019867 is a deficient number, since it is larger than the sum of its proper divisors (15680725).

520019867 is a wasteful number, since it uses less digits than its factorization.

520019867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42829.

The product of its (nonzero) digits is 30240, while the sum is 38.

The square root of 520019867 is about 22803.9441106138. The cubic root of 520019867 is about 804.1553925821.

The spelling of 520019867 in words is "five hundred twenty million, nineteen thousand, eight hundred sixty-seven".