4138361 has 4 divisors (see below), whose sum is σ = 4381812. Its totient is φ = 3894912.

The previous prime is 4138349. The next prime is 4138369. The reversal of 4138361 is 1638314.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1638314 = 2 ⋅819157.

It can be written as a sum of positive squares in 2 ways, for example, as 3728761 + 409600 = 1931^2 + 640^2 .

It is a cyclic number.

It is not a de Polignac number, because 4138361 - 2¹⁰ = 4137337 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4138361.

It is not an unprimeable number, because it can be changed into a prime (4138369) 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, 121700 + ... + 121733.

It is an arithmetic number, because the mean of its divisors is an integer number (1095453).

Almost surely, 2^4138361 is an apocalyptic number.

It is an amenable number.

4138361 is a deficient number, since it is larger than the sum of its proper divisors (243451).

4138361 is a wasteful number, since it uses less digits than its factorization.

4138361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 243450.

The product of its digits is 1728, while the sum is 26.

The square root of 4138361 is about 2034.2961927900. The cubic root of 4138361 is about 160.5496848989.

The spelling of 4138361 in words is "four million, one hundred thirty-eight thousand, three hundred sixty-one".