11957189 has 2 divisors, whose sum is σ = 11957190. Its totient is φ = 11957188.

The previous prime is 11957161. The next prime is 11957201. The reversal of 11957189 is 98175911.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11937025 + 20164 = 3455^2 + 142^2 .

It is a cyclic number.

It is not a de Polignac number, because 11957189 - 2²⁰ = 10908613 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11957789) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5978594 + 5978595.

It is an arithmetic number, because the mean of its divisors is an integer number (5978595).

Almost surely, 2^11957189 is an apocalyptic number.

It is an amenable number.

11957189 is a deficient number, since it is larger than the sum of its proper divisors (1).

11957189 is an equidigital number, since it uses as much as digits as its factorization.

11957189 is an evil number, because the sum of its binary digits is even.

The product of its digits is 22680, while the sum is 41.

The square root of 11957189 is about 3457.9168584568. The cubic root of 11957189 is about 228.6702665367.

The spelling of 11957189 in words is "eleven million, nine hundred fifty-seven thousand, one hundred eighty-nine".