509430329490 has 64 divisors (see below), whose sum is σ = 1296535683456. Its totient is φ = 127661140992.

The previous prime is 509430329483. The next prime is 509430329491. The reversal of 509430329490 is 94923034905.

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

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 31 ways as a sum of consecutive naturals, for example, 431812 + ... + 1097871.

It is an arithmetic number, because the mean of its divisors is an integer number (20258370054).

Almost surely, 2^509430329490 is an apocalyptic number.

509430329490 is an abundant number, since it is smaller than the sum of its proper divisors (787105353966).

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

509430329490 is a wasteful number, since it uses less digits than its factorization.

509430329490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1530363.

The product of its (nonzero) digits is 1049760, while the sum is 48.

The spelling of 509430329490 in words is "five hundred nine billion, four hundred thirty million, three hundred twenty-nine thousand, four hundred ninety".