26118013 has 4 divisors (see below), whose sum is σ = 26475868. Its totient is φ = 25760160.

The previous prime is 26117999. The next prime is 26118023. The reversal of 26118013 is 31081162.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6775609 + 19342404 = 2603^2 + 4398^2 .

It is a cyclic number.

It is not a de Polignac number, because 26118013 - 2⁵ = 26117981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26118023) 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, 178818 + ... + 178963.

It is an arithmetic number, because the mean of its divisors is an integer number (6618967).

Almost surely, 2^26118013 is an apocalyptic number.

It is an amenable number.

26118013 is a deficient number, since it is larger than the sum of its proper divisors (357855).

26118013 is an equidigital number, since it uses as much as digits as its factorization.

26118013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 357854.

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 26118013 is about 5110.5785386784. The cubic root of 26118013 is about 296.6971522488.

Adding to 26118013 its reverse (31081162), we get a palindrome (57199175).

The spelling of 26118013 in words is "twenty-six million, one hundred eighteen thousand, thirteen".