1186267141 has 2 divisors, whose sum is σ = 1186267142. Its totient is φ = 1186267140.

The previous prime is 1186267139. The next prime is 1186267153. The reversal of 1186267141 is 1417626811.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 899100225 + 287166916 = 29985^2 + 16946^2 .

It is a cyclic number.

It is not a de Polignac number, because 1186267141 - 2¹ = 1186267139 is a prime.

Together with 1186267139, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1186267141.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1186267241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 593133570 + 593133571.

It is an arithmetic number, because the mean of its divisors is an integer number (593133571).

Almost surely, 2^1186267141 is an apocalyptic number.

It is an amenable number.

1186267141 is a deficient number, since it is larger than the sum of its proper divisors (1).

1186267141 is an equidigital number, since it uses as much as digits as its factorization.

1186267141 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16128, while the sum is 37.

The square root of 1186267141 is about 34442.2290364605. The cubic root of 1186267141 is about 1058.5893008717.

It can be divided in two parts, 11862 and 67141, that added together give a triangular number (79003 = T₃₉₇).

The spelling of 1186267141 in words is "one billion, one hundred eighty-six million, two hundred sixty-seven thousand, one hundred forty-one".