26121189 has 16 divisors (see below), whose sum is σ = 36200960. Its totient is φ = 16735680.

The previous prime is 26121187. The next prime is 26121191. The reversal of 26121189 is 98112162.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (26121187) and next prime (26121191).

It is not a de Polignac number, because 26121189 - 2¹ = 26121187 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 (26121187) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13707 + ... + 15495.

It is an arithmetic number, because the mean of its divisors is an integer number (2262560).

Almost surely, 2^26121189 is an apocalyptic number.

It is an amenable number.

26121189 is a deficient number, since it is larger than the sum of its proper divisors (10079771).

26121189 is a wasteful number, since it uses less digits than its factorization.

26121189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1980.

The product of its digits is 1728, while the sum is 30.

The square root of 26121189 is about 5110.8892572624. The cubic root of 26121189 is about 296.7091780738.

The spelling of 26121189 in words is "twenty-six million, one hundred twenty-one thousand, one hundred eighty-nine".