2049191 has 2 divisors, whose sum is σ = 2049192. Its totient is φ = 2049190.

The previous prime is 2049167. The next prime is 2049263. The reversal of 2049191 is 1919402.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2049191 - 2⁶ = 2049127 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2049191.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2049121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1024595 + 1024596.

It is an arithmetic number, because the mean of its divisors is an integer number (1024596).

2^2049191 is an apocalyptic number.

2049191 is a deficient number, since it is larger than the sum of its proper divisors (1).

2049191 is an equidigital number, since it uses as much as digits as its factorization.

2049191 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 26.

The square root of 2049191 is about 1431.4995633950. The cubic root of 2049191 is about 127.0166965049.

It can be divided in two parts, 20491 and 91, that multiplied together give a palindrome (1864681).

The spelling of 2049191 in words is "two million, forty-nine thousand, one hundred ninety-one".