2691189 has 12 divisors (see below), whose sum is σ = 3946176. Its totient is φ = 1766952.

The previous prime is 2691187. The next prime is 2691191. The reversal of 2691189 is 9811962.

It is an interprime number because it is at equal distance from previous prime (2691187) and next prime (2691191).

It is not a de Polignac number, because 2691189 - 2¹ = 2691187 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2691187) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1629 + ... + 2834.

It is an arithmetic number, because the mean of its divisors is an integer number (328848).

2^2691189 is an apocalyptic number.

It is an amenable number.

2691189 is a deficient number, since it is larger than the sum of its proper divisors (1254987).

2691189 is a wasteful number, since it uses less digits than its factorization.

2691189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4536 (or 4533 counting only the distinct ones).

The product of its digits is 7776, while the sum is 36.

The square root of 2691189 is about 1640.4843796879. The cubic root of 2691189 is about 139.0960294272.

It can be divided in two parts, 26911 and 89, that added together give a cube (27000 = 30³).

The spelling of 2691189 in words is "two million, six hundred ninety-one thousand, one hundred eighty-nine".