1187159 has 2 divisors, whose sum is σ = 1187160. Its totient is φ = 1187158.

The previous prime is 1187141. The next prime is 1187167. The reversal of 1187159 is 9517811.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1187159 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1187189) 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, 593579 + 593580.

It is an arithmetic number, because the mean of its divisors is an integer number (593580).

2^1187159 is an apocalyptic number.

1187159 is a deficient number, since it is larger than the sum of its proper divisors (1).

1187159 is an equidigital number, since it uses as much as digits as its factorization.

1187159 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2520, while the sum is 32.

The square root of 1187159 is about 1089.5682631208. The cubic root of 1187159 is about 105.8854523845.

The spelling of 1187159 in words is "one million, one hundred eighty-seven thousand, one hundred fifty-nine".