538609968 has 120 divisors (see below), whose sum is σ = 1635051600. Its totient is φ = 164528640.

The previous prime is 538609949. The next prime is 538609979. The reversal of 538609968 is 869906835.

It is a super-2 number, since 2×538609968² = 580201395257922048, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 277963 + ... + 279893.

It is an arithmetic number, because the mean of its divisors is an integer number (13625430).

Almost surely, 2^538609968 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 538609968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (817525800).

538609968 is an abundant number, since it is smaller than the sum of its proper divisors (1096441632).

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

538609968 is a wasteful number, since it uses less digits than its factorization.

538609968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2107 (or 2098 counting only the distinct ones).

The product of its (nonzero) digits is 2799360, while the sum is 54.

The square root of 538609968 is about 23207.9720785768. The cubic root of 538609968 is about 813.6259572938.

The spelling of 538609968 in words is "five hundred thirty-eight million, six hundred nine thousand, nine hundred sixty-eight".