1591144 has 16 divisors (see below), whose sum is σ = 3013920. Its totient is φ = 787440.

The previous prime is 1591141. The next prime is 1591159. The reversal of 1591144 is 4411951.

It is not an unprimeable number, because it can be changed into a prime (1591141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 142 + ... + 1789.

It is an arithmetic number, because the mean of its divisors is an integer number (188370).

2^1591144 is an apocalyptic number.

It is an amenable number.

1591144 is a deficient number, since it is larger than the sum of its proper divisors (1422776).

1591144 is a wasteful number, since it uses less digits than its factorization.

1591144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2040 (or 2036 counting only the distinct ones).

The product of its digits is 720, while the sum is 25.

The square root of 1591144 is about 1261.4055652327. The cubic root of 1591144 is about 116.7445176534.

The spelling of 1591144 in words is "one million, five hundred ninety-one thousand, one hundred forty-four".