509690196 has 36 divisors (see below), whose sum is σ = 1332813300. Its totient is φ = 164037888.

The previous prime is 509690183. The next prime is 509690221. The reversal of 509690196 is 691096905.

It can be written as a sum of positive squares in 2 ways, for example, as 399440196 + 110250000 = 19986^2 + 10500^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 243061 + ... + 245148.

Almost surely, 2^509690196 is an apocalyptic number.

It is an amenable number.

509690196 is an abundant number, since it is smaller than the sum of its proper divisors (823123104).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

509690196 is a wasteful number, since it uses less digits than its factorization.

509690196 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 488248 (or 488243 counting only the distinct ones).

The product of its (nonzero) digits is 131220, while the sum is 45.

The square root of 509690196 is about 22576.3193634392. The cubic root of 509690196 is about 798.7951634554.

The spelling of 509690196 in words is "five hundred nine million, six hundred ninety thousand, one hundred ninety-six".