509818852 has 6 divisors (see below), whose sum is σ = 892182998. Its totient is φ = 254909424.

The previous prime is 509818817. The next prime is 509818853. The reversal of 509818852 is 258818905.

It can be written as a sum of positive squares in only one way, i.e., 411927616 + 97891236 = 20296^2 + 9894^2 .

It is not an unprimeable number, because it can be changed into a prime (509818853) 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 as a sum of consecutive naturals, namely, 63727353 + ... + 63727360.

Almost surely, 2^509818852 is an apocalyptic number.

It is an amenable number.

509818852 is a deficient number, since it is larger than the sum of its proper divisors (382364146).

509818852 is a wasteful number, since it uses less digits than its factorization.

509818852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127454717 (or 127454715 counting only the distinct ones).

The product of its (nonzero) digits is 230400, while the sum is 46.

The square root of 509818852 is about 22579.1685409361. The cubic root of 509818852 is about 798.8623684265.

The spelling of 509818852 in words is "five hundred nine million, eight hundred eighteen thousand, eight hundred fifty-two".