1191095 has 8 divisors (see below), whose sum is σ = 1437360. Its totient is φ = 947520.

The previous prime is 1191089. The next prime is 1191097. The reversal of 1191095 is 5901911.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1191095 - 2⁴ = 1191079 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1191097) 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 in 7 ways as a sum of consecutive naturals, for example, 491 + ... + 1619.

It is an arithmetic number, because the mean of its divisors is an integer number (179670).

2^1191095 is an apocalyptic number.

1191095 is a deficient number, since it is larger than the sum of its proper divisors (246265).

1191095 is a wasteful number, since it uses less digits than its factorization.

1191095 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1345.

The product of its (nonzero) digits is 405, while the sum is 26.

The square root of 1191095 is about 1091.3729884874. The cubic root of 1191095 is about 106.0023436055.

It can be divided in two parts, 119 and 1095, that multiplied together give a triangular number (130305 = T₅₁₀).

The spelling of 1191095 in words is "one million, one hundred ninety-one thousand, ninety-five".