26438161 has 4 divisors (see below), whose sum is σ = 26453232. Its totient is φ = 26423092.

The previous prime is 26438141. The next prime is 26438189. The reversal of 26438161 is 16183462.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 16183462 = 2 ⋅8091731.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26438161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26438141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4495 + ... + 8548.

It is an arithmetic number, because the mean of its divisors is an integer number (6613308).

Almost surely, 2^26438161 is an apocalyptic number.

It is an amenable number.

26438161 is a deficient number, since it is larger than the sum of its proper divisors (15071).

26438161 is a wasteful number, since it uses less digits than its factorization.

26438161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15070.

The product of its digits is 6912, while the sum is 31.

The square root of 26438161 is about 5141.8052277386. The cubic root of 26438161 is about 297.9045119943.

The spelling of 26438161 in words is "twenty-six million, four hundred thirty-eight thousand, one hundred sixty-one".