2691149 has 2 divisors, whose sum is σ = 2691150. Its totient is φ = 2691148.

The previous prime is 2691131. The next prime is 2691163. The reversal of 2691149 is 9411962.

2691149 is nontrivially palindromic in base 9.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2175625 + 515524 = 1475^2 + 718^2 .

It is a cyclic number.

It is not a de Polignac number, because 2691149 - 2¹⁶ = 2625613 is a prime.

It is a Chen prime.

It is a plaindrome in base 11.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2691119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1345574 + 1345575.

It is an arithmetic number, because the mean of its divisors is an integer number (1345575).

2^2691149 is an apocalyptic number.

It is an amenable number.

2691149 is a deficient number, since it is larger than the sum of its proper divisors (1).

2691149 is an equidigital number, since it uses as much as digits as its factorization.

2691149 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3888, while the sum is 32.

The square root of 2691149 is about 1640.4721881215. The cubic root of 2691149 is about 139.0953402809.

The spelling of 2691149 in words is "two million, six hundred ninety-one thousand, one hundred forty-nine".