1189005 has 16 divisors (see below), whose sum is σ = 1964544. Its totient is φ = 613440.

The previous prime is 1189003. The next prime is 1189007. The reversal of 1189005 is 5009811.

1189005 = T₃₈ + T₃₉ + ... + T₁₉₂.

It is an interprime number because it is at equal distance from previous prime (1189003) and next prime (1189007).

It is not a de Polignac number, because 1189005 - 2¹ = 1189003 is a prime.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1189003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 814 + ... + 1743.

It is an arithmetic number, because the mean of its divisors is an integer number (122784).

2^1189005 is an apocalyptic number.

1189005 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1189005 is a deficient number, since it is larger than the sum of its proper divisors (775539).

1189005 is a wasteful number, since it uses less digits than its factorization.

1189005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2596.

The product of its (nonzero) digits is 360, while the sum is 24.

The square root of 1189005 is about 1090.4150585901. The cubic root of 1189005 is about 105.9403069626.

The spelling of 1189005 in words is "one million, one hundred eighty-nine thousand, five".