509803011 has 16 divisors (see below), whose sum is σ = 768067200. Its totient is φ = 334107144.

The previous prime is 509802973. The next prime is 509803033. The reversal of 509803011 is 110308905.

It is not a de Polignac number, because 509803011 - 2⁹ = 509802499 is a prime.

It is a super-2 number, since 2×509803011² = 519798220049332242, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (509803051) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 158421 + ... + 161606.

It is an arithmetic number, because the mean of its divisors is an integer number (48004200).

Almost surely, 2^509803011 is an apocalyptic number.

509803011 is a deficient number, since it is larger than the sum of its proper divisors (258264189).

509803011 is a wasteful number, since it uses less digits than its factorization.

509803011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 320095 (or 320089 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 27.

The square root of 509803011 is about 22578.8177502720. The cubic root of 509803011 is about 798.8540943047.

The spelling of 509803011 in words is "five hundred nine million, eight hundred three thousand, eleven".