4523138 has 4 divisors (see below), whose sum is σ = 6784710. Its totient is φ = 2261568.

The previous prime is 4523137. The next prime is 4523147. The reversal of 4523138 is 8313254.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8313254 = 2 ⋅4156627.

It can be written as a sum of positive squares in only one way, i.e., 4190209 + 332929 = 2047^2 + 577^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (4523137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1130783 + ... + 1130786.

Almost surely, 2^4523138 is an apocalyptic number.

4523138 is a deficient number, since it is larger than the sum of its proper divisors (2261572).

4523138 is a wasteful number, since it uses less digits than its factorization.

4523138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2261571.

The product of its digits is 2880, while the sum is 26.

The square root of 4523138 is about 2126.7670300247. The cubic root of 4523138 is about 165.3788417837.

The spelling of 4523138 in words is "four million, five hundred twenty-three thousand, one hundred thirty-eight".