4518138 has 8 divisors (see below), whose sum is σ = 9036288. Its totient is φ = 1506044.

The previous prime is 4518133. The next prime is 4518169. The reversal of 4518138 is 8318154.

It is a sphenic number, since it is the product of 3 distinct primes.

4518138 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (4518133) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 376506 + ... + 376517.

It is an arithmetic number, because the mean of its divisors is an integer number (1129536).

Almost surely, 2^4518138 is an apocalyptic number.

4518138 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

4518138 is a wasteful number, since it uses less digits than its factorization.

4518138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 753028.

The product of its digits is 3840, while the sum is 30.

The square root of 4518138 is about 2125.5912118749. The cubic root of 4518138 is about 165.3178812230.

It can be divided in two parts, 4518 and 138, that added together give a triangular number (4656 = T₉₆).

The spelling of 4518138 in words is "four million, five hundred eighteen thousand, one hundred thirty-eight".