1591149 has 16 divisors (see below), whose sum is σ = 2567808. Its totient is φ = 855552.

The previous prime is 1591141. The next prime is 1591159. The reversal of 1591149 is 9411951.

It is not a de Polignac number, because 1591149 - 2³ = 1591141 is a prime.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1591141) 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, 1872 + ... + 2585.

It is an arithmetic number, because the mean of its divisors is an integer number (160488).

2^1591149 is an apocalyptic number.

It is an amenable number.

1591149 is a deficient number, since it is larger than the sum of its proper divisors (976659).

1591149 is a wasteful number, since it uses less digits than its factorization.

1591149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4484.

The product of its digits is 1620, while the sum is 30.

The square root of 1591149 is about 1261.4075471472. The cubic root of 1591149 is about 116.7446399390.

The spelling of 1591149 in words is "one million, five hundred ninety-one thousand, one hundred forty-nine".