1591113 has 8 divisors (see below), whose sum is σ = 2161728. Its totient is φ = 1040624.

The previous prime is 1591103. The next prime is 1591127. The reversal of 1591113 is 3111951.

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

It is a cyclic number.

It is not a de Polignac number, because 1591113 - 2⁴ = 1591097 is a prime.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 1591113.

It is not an unprimeable number, because it can be changed into a prime (1591103) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4845 + ... + 5162.

It is an arithmetic number, because the mean of its divisors is an integer number (270216).

2^1591113 is an apocalyptic number.

It is an amenable number.

1591113 is a deficient number, since it is larger than the sum of its proper divisors (570615).

1591113 is a wasteful number, since it uses less digits than its factorization.

1591113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10063.

The product of its digits is 135, while the sum is 21.

The square root of 1591113 is about 1261.3932772930. The cubic root of 1591113 is about 116.7437594770.

The spelling of 1591113 in words is "one million, five hundred ninety-one thousand, one hundred thirteen".