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1187 is a prime number

• 1187 is the smallest number whose representation contains at least two identical adjacent digits in every base from 2 to 10 (see representation table). If we are looking for triples or quadruples instead of pairs, the smallest such numbers are 2790000 and 91532745555, respectively.

1187 has 2 divisors, whose sum is σ = 1188. Its totient is φ = 1186.

The previous prime is 1181. The next prime is 1193. The reversal of 1187 is 7811.

It is a balanced prime because it is at equal distance from previous prime (1181) and next prime (1193).

It is a cyclic number.

It is not a de Polignac number, because 1187 - 24 = 1171 is a prime.

It is a Chen prime.

It is a plaindrome in base 9.

It is a nialpdrome in base 15.

It is not a weakly prime, because it can be changed into another prime (1181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 593 + 594.

It is an arithmetic number, because the mean of its divisors is an integer number (594).

1187 is a deficient number, since it is larger than the sum of its proper divisors (1).

1187 is an equidigital number, since it uses as much as digits as its factorization.

1187 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 56, while the sum is 17.

The square root of 1187 is about 34.4528663539. The cubic root of 1187 is about 10.5880724981.

Adding to 1187 its reverse (7811), we get a palindrome (8998).

It can be divided in two parts, 118 and 7, that added together give a cube (125 = 53).

The spelling of 1187 in words is "one thousand, one hundred eighty-seven".