538437481 has 16 divisors (see below), whose sum is σ = 598510080. Its totient is φ = 482077440.

The previous prime is 538437463. The next prime is 538437509. The reversal of 538437481 is 184734835.

538437481 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 538437481 - 2⁷ = 538437353 is a prime.

It is a super-2 number, since 2×538437481² = 579829841891250722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (538437281) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22435 + ... + 39751.

It is an arithmetic number, because the mean of its divisors is an integer number (37406880).

Almost surely, 2^538437481 is an apocalyptic number.

It is an amenable number.

538437481 is a deficient number, since it is larger than the sum of its proper divisors (60072599).

538437481 is a wasteful number, since it uses less digits than its factorization.

538437481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17424.

The product of its digits is 322560, while the sum is 43.

The square root of 538437481 is about 23204.2556657179. The cubic root of 538437481 is about 813.5390948810.

The spelling of 538437481 in words is "five hundred thirty-eight million, four hundred thirty-seven thousand, four hundred eighty-one".