1491189 has 16 divisors (see below), whose sum is σ = 2406528. Its totient is φ = 801792.

The previous prime is 1491179. The next prime is 1491199. The reversal of 1491189 is 9811941.

It is an interprime number because it is at equal distance from previous prime (1491179) and next prime (1491199).

It is not a de Polignac number, because 1491189 - 2⁵ = 1491157 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1491109) 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 15 ways as a sum of consecutive naturals, for example, 1732 + ... + 2445.

It is an arithmetic number, because the mean of its divisors is an integer number (150408).

2^1491189 is an apocalyptic number.

It is an amenable number.

1491189 is a deficient number, since it is larger than the sum of its proper divisors (915339).

1491189 is a wasteful number, since it uses less digits than its factorization.

1491189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4204.

The product of its digits is 2592, while the sum is 33.

The square root of 1491189 is about 1221.1424978273. The cubic root of 1491189 is about 114.2468489124.

The spelling of 1491189 in words is "one million, four hundred ninety-one thousand, one hundred eighty-nine".