5209309368 has 128 divisors (see below), whose sum is σ = 14863564800. Its totient is φ = 1689787008.

The previous prime is 5209309351. The next prime is 5209309447. The reversal of 5209309368 is 8639039025.

5209309368 is a `hidden beast` number, since 520 + 9 + 30 + 93 + 6 + 8 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1452105 + ... + 1455687.

It is an arithmetic number, because the mean of its divisors is an integer number (116121600).

Almost surely, 2^5209309368 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5209309368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7431782400).

5209309368 is an abundant number, since it is smaller than the sum of its proper divisors (9654255432).

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

5209309368 is a wasteful number, since it uses less digits than its factorization.

5209309368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3778 (or 3768 counting only the distinct ones).

The product of its (nonzero) digits is 349920, while the sum is 45.

The square root of 5209309368 is about 72175.5454984581. The cubic root of 5209309368 is about 1733.5114582559.

The spelling of 5209309368 in words is "five billion, two hundred nine million, three hundred nine thousand, three hundred sixty-eight".