538018550 has 48 divisors (see below), whose sum is σ = 1069485120. Its totient is φ = 200655360.

The previous prime is 538018483. The next prime is 538018571. The reversal of 538018550 is 55810835.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 538018550.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 89747 + ... + 95553.

It is an arithmetic number, because the mean of its divisors is an integer number (22280940).

Almost surely, 2^538018550 is an apocalyptic number.

538018550 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

538018550 is a deficient number, since it is larger than the sum of its proper divisors (531466570).

538018550 is a wasteful number, since it uses less digits than its factorization.

538018550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5945 (or 5940 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 35.

The square root of 538018550 is about 23195.2268796837. The cubic root of 538018550 is about 813.3280489146.

The spelling of 538018550 in words is "five hundred thirty-eight million, eighteen thousand, five hundred fifty".