1187411 has 2 divisors, whose sum is σ = 1187412. Its totient is φ = 1187410.

The previous prime is 1187387. The next prime is 1187413. The reversal of 1187411 is 1147811.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1187411 is a prime.

Together with 1187413, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1187413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 593705 + 593706.

It is an arithmetic number, because the mean of its divisors is an integer number (593706).

2^1187411 is an apocalyptic number.

1187411 is a deficient number, since it is larger than the sum of its proper divisors (1).

1187411 is an equidigital number, since it uses as much as digits as its factorization.

1187411 is an evil number, because the sum of its binary digits is even.

The product of its digits is 224, while the sum is 23.

The square root of 1187411 is about 1089.6838991194. The cubic root of 1187411 is about 105.8929440084.

The spelling of 1187411 in words is "one million, one hundred eighty-seven thousand, four hundred eleven".