2231849 has 2 divisors, whose sum is σ = 2231850. Its totient is φ = 2231848.

The previous prime is 2231843. The next prime is 2231857. The reversal of 2231849 is 9481322.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1517824 + 714025 = 1232^2 + 845^2 .

It is a cyclic number.

It is not a de Polignac number, because 2231849 - 2⁴ = 2231833 is a prime.

It is a super-3 number, since 3×2231849³ = 33351523663200159147, which contains 333 as substring. Note that it is a super-d number also for d = 2.

It is equal to p₁₆₄₈₄₆ and since 2231849 and 164846 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (2231843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1115924 + 1115925.

It is an arithmetic number, because the mean of its divisors is an integer number (1115925).

2^2231849 is an apocalyptic number.

It is an amenable number.

2231849 is a deficient number, since it is larger than the sum of its proper divisors (1).

2231849 is an equidigital number, since it uses as much as digits as its factorization.

2231849 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3456, while the sum is 29.

The square root of 2231849 is about 1493.9374150211. The cubic root of 2231849 is about 130.6837543887.

The spelling of 2231849 in words is "two million, two hundred thirty-one thousand, eight hundred forty-nine".