509683945 has 8 divisors (see below), whose sum is σ = 625844736. Its totient is φ = 398264496.

The previous prime is 509683943. The next prime is 509684033. The reversal of 509683945 is 549386905.

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 509683945 - 2¹ = 509683943 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (509683943) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1185097 + ... + 1185526.

It is an arithmetic number, because the mean of its divisors is an integer number (78230592).

Almost surely, 2^509683945 is an apocalyptic number.

It is an amenable number.

509683945 is a deficient number, since it is larger than the sum of its proper divisors (116160791).

509683945 is a wasteful number, since it uses less digits than its factorization.

509683945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2370671.

The product of its (nonzero) digits is 1166400, while the sum is 49.

The square root of 509683945 is about 22576.1809214933. The cubic root of 509683945 is about 798.7918978841.

The spelling of 509683945 in words is "five hundred nine million, six hundred eighty-three thousand, nine hundred forty-five".