538191 has 16 divisors (see below), whose sum is σ = 824320. Its totient is φ = 346680.

The previous prime is 538163. The next prime is 538199. The reversal of 538191 is 191835.

538191 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 538191 - 2⁵ = 538159 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

538191 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (538199) 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, 516 + ... + 1158.

It is an arithmetic number, because the mean of its divisors is an integer number (51520).

2⁵³⁸¹⁹¹ is an apocalyptic number.

538191 is a deficient number, since it is larger than the sum of its proper divisors (286129).

538191 is a wasteful number, since it uses less digits than its factorization.

538191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 683 (or 677 counting only the distinct ones).

The product of its digits is 1080, while the sum is 27.

The square root of 538191 is about 733.6150216565. The cubic root of 538191 is about 81.3414937764.

It can be divided in two parts, 538 and 191, that added together give a 6-th power (729 = 3⁶).

The spelling of 538191 in words is "five hundred thirty-eight thousand, one hundred ninety-one".