1186541 has 2 divisors, whose sum is σ = 1186542. Its totient is φ = 1186540.

The previous prime is 1186519. The next prime is 1186573. The reversal of 1186541 is 1456811.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1110916 + 75625 = 1054^2 + 275^2 .

It is a cyclic number.

It is not a de Polignac number, because 1186541 - 2¹⁸ = 924397 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1186541.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1186441) 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 as a sum of consecutive naturals, namely, 593270 + 593271.

It is an arithmetic number, because the mean of its divisors is an integer number (593271).

2^1186541 is an apocalyptic number.

It is an amenable number.

1186541 is a deficient number, since it is larger than the sum of its proper divisors (1).

1186541 is an equidigital number, since it uses as much as digits as its factorization.

1186541 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 960, while the sum is 26.

The square root of 1186541 is about 1089.2846276341. The cubic root of 1186541 is about 105.8670755796.

The spelling of 1186541 in words is "one million, one hundred eighty-six thousand, five hundred forty-one".