4138533 has 28 divisors (see below), whose sum is σ = 7100128. Its totient is φ = 2361960.

The previous prime is 4138529. The next prime is 4138543. The reversal of 4138533 is 3358314.

It is a happy number.

4138533 is digitally balanced in base 8, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 4138533 - 2² = 4138529 is a prime.

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

4138533 is strictly pandigital in base 8.

It is a junction number, because it is equal to n+sod(n) for n = 4138497 and 4138506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4138513) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 4698 + ... + 5508.

It is an arithmetic number, because the mean of its divisors is an integer number (253576).

Almost surely, 2^4138533 is an apocalyptic number.

It is an amenable number.

4138533 is a deficient number, since it is larger than the sum of its proper divisors (2961595).

4138533 is an frugal number, since it uses more digits than its factorization.

4138533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 836 (or 821 counting only the distinct ones).

The product of its digits is 4320, while the sum is 27.

The square root of 4138533 is about 2034.3384674139. The cubic root of 4138533 is about 160.5519091421.

The spelling of 4138533 in words is "four million, one hundred thirty-eight thousand, five hundred thirty-three".