509430329492 has 12 divisors (see below), whose sum is σ = 1018860659040. Its totient is φ = 218327284056.

The previous prime is 509430329491. The next prime is 509430329501. The reversal of 509430329492 is 294923034905.

It is a happy number.

509430329492 is an admirable number.

It is an alternating number because its digits alternate between odd and even.

It is a self number, because there is not a number n which added to its sum of digits gives 509430329492.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (509430329491) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9096970142 + ... + 9096970197.

It is an arithmetic number, because the mean of its divisors is an integer number (84905054920).

Almost surely, 2^509430329492 is an apocalyptic number.

It is an amenable number.

509430329492 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

509430329492 is a wasteful number, since it uses less digits than its factorization.

509430329492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18193940350 (or 18193940348 counting only the distinct ones).

The product of its (nonzero) digits is 2099520, while the sum is 50.

The spelling of 509430329492 in words is "five hundred nine billion, four hundred thirty million, three hundred twenty-nine thousand, four hundred ninety-two".