538443500 has 48 divisors (see below), whose sum is σ = 1343963712. Its totient is φ = 184608000.

The previous prime is 538443491. The next prime is 538443509. The reversal of 538443500 is 5344835.

It is an interprime number because it is at equal distance from previous prime (538443491) and next prime (538443509).

It is not an unprimeable number, because it can be changed into a prime (538443509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 73421 + ... + 80420.

It is an arithmetic number, because the mean of its divisors is an integer number (27999244).

Almost surely, 2^538443500 is an apocalyptic number.

538443500 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

538443500 is an abundant number, since it is smaller than the sum of its proper divisors (805520212).

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

538443500 is a wasteful number, since it uses less digits than its factorization.

538443500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153867 (or 153855 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 32.

The square root of 538443500 is about 23204.3853613924. The cubic root of 538443500 is about 813.5421262905.

It can be divided in two parts, 5384 and 43500, that added together give a palindrome (48884).

The spelling of 538443500 in words is "five hundred thirty-eight million, four hundred forty-three thousand, five hundred".