2182940849 has 2 divisors, whose sum is σ = 2182940850. Its totient is φ = 2182940848.

The previous prime is 2182940831. The next prime is 2182940861. The reversal of 2182940849 is 9480492812.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2045933824 + 137007025 = 45232^2 + 11705^2 .

It is a cyclic number.

It is not a de Polignac number, because 2182940849 - 2¹⁶ = 2182875313 is a prime.

It is a super-3 number, since 3×2182940849³ (a number of 29 digits) contains 333 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (2182940899) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1091470424 + 1091470425.

It is an arithmetic number, because the mean of its divisors is an integer number (1091470425).

Almost surely, 2^2182940849 is an apocalyptic number.

It is an amenable number.

2182940849 is a deficient number, since it is larger than the sum of its proper divisors (1).

2182940849 is an equidigital number, since it uses as much as digits as its factorization.

2182940849 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 331776, while the sum is 47.

The square root of 2182940849 is about 46721.9525383946. The cubic root of 2182940849 is about 1297.2210557374.

The spelling of 2182940849 in words is "two billion, one hundred eighty-two million, nine hundred forty thousand, eight hundred forty-nine".