1188105 has 16 divisors (see below), whose sum is σ = 1921920. Its totient is φ = 626688.

The previous prime is 1188073. The next prime is 1188149. The reversal of 1188105 is 5018811.

It is not a de Polignac number, because 1188105 - 2⁵ = 1188073 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1161 + ... + 1929.

It is an arithmetic number, because the mean of its divisors is an integer number (120120).

2^1188105 is an apocalyptic number.

1188105 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1188105 is a deficient number, since it is larger than the sum of its proper divisors (733815).

1188105 is a wasteful number, since it uses less digits than its factorization.

1188105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 880.

The product of its (nonzero) digits is 320, while the sum is 24.

The square root of 1188105 is about 1090.0022935756. The cubic root of 1188105 is about 105.9135702252.

The spelling of 1188105 in words is "one million, one hundred eighty-eight thousand, one hundred five".