2191413 has 16 divisors (see below), whose sum is σ = 3360896. Its totient is φ = 1244160.

The previous prime is 2191393. The next prime is 2191429. The reversal of 2191413 is 3141912.

It is not a de Polignac number, because 2191413 - 2⁹ = 2190901 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

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 2191413.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2191433) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4845 + ... + 5277.

It is an arithmetic number, because the mean of its divisors is an integer number (210056).

2^2191413 is an apocalyptic number.

It is an amenable number.

2191413 is a deficient number, since it is larger than the sum of its proper divisors (1169483).

2191413 is a wasteful number, since it uses less digits than its factorization.

2191413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 684.

The product of its digits is 216, while the sum is 21.

The square root of 2191413 is about 1480.3421901709. The cubic root of 2191413 is about 129.8897092181.

The spelling of 2191413 in words is "two million, one hundred ninety-one thousand, four hundred thirteen".