2419981 has 2 divisors, whose sum is σ = 2419982. Its totient is φ = 2419980.

The previous prime is 2419979. The next prime is 2419987. The reversal of 2419981 is 1899142.

2419981 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2160900 + 259081 = 1470^2 + 509^2 .

It is a cyclic number.

It is not a de Polignac number, because 2419981 - 2¹ = 2419979 is a prime.

It is a super-2 number, since 2×2419981² = 11712616080722, which contains 22 as substring.

Together with 2419979, it forms a pair of twin primes.

2419981 is a lucky number.

It is a nialpdrome in base 12.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2419987) 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, 1209990 + 1209991.

It is an arithmetic number, because the mean of its divisors is an integer number (1209991).

2^2419981 is an apocalyptic number.

It is an amenable number.

2419981 is a deficient number, since it is larger than the sum of its proper divisors (1).

2419981 is an equidigital number, since it uses as much as digits as its factorization.

2419981 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5184, while the sum is 34.

The square root of 2419981 is about 1555.6288117671. The cubic root of 2419981 is about 134.2571175283.

The spelling of 2419981 in words is "two million, four hundred nineteen thousand, nine hundred eighty-one".