2191593 has 8 divisors (see below), whose sum is σ = 3076000. Its totient is φ = 1384128.

The previous prime is 2191583. The next prime is 2191619. The reversal of 2191593 is 3951912.

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

It is not a de Polignac number, because 2191593 - 2⁵ = 2191561 is a prime.

It is a Duffinian number.

2191593 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 2191593.

It is not an unprimeable number, because it can be changed into a prime (2191513) 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, 19168 + ... + 19281.

It is an arithmetic number, because the mean of its divisors is an integer number (384500).

2^2191593 is an apocalyptic number.

It is an amenable number.

2191593 is a deficient number, since it is larger than the sum of its proper divisors (884407).

2191593 is a wasteful number, since it uses less digits than its factorization.

2191593 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38471.

The product of its digits is 2430, while the sum is 30.

The square root of 2191593 is about 1480.4029856765. The cubic root of 2191593 is about 129.8932654484.

The spelling of 2191593 in words is "two million, one hundred ninety-one thousand, five hundred ninety-three".