2444749381 has 2 divisors, whose sum is σ = 2444749382. Its totient is φ = 2444749380.

The previous prime is 2444749357. The next prime is 2444749421. The reversal of 2444749381 is 1839474442.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1985504481 + 459244900 = 44559^2 + 21430^2 .

It is a cyclic number.

It is not a de Polignac number, because 2444749381 - 2¹⁹ = 2444225093 is a prime.

It is a super-2 number, since 2×2444749381² = 11953599071799766322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2444749981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1222374690 + 1222374691.

It is an arithmetic number, because the mean of its divisors is an integer number (1222374691).

Almost surely, 2^2444749381 is an apocalyptic number.

It is an amenable number.

2444749381 is a deficient number, since it is larger than the sum of its proper divisors (1).

2444749381 is an equidigital number, since it uses as much as digits as its factorization.

2444749381 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 774144, while the sum is 46.

The square root of 2444749381 is about 49444.4069738934. The cubic root of 2444749381 is about 1347.1360191728.

The spelling of 2444749381 in words is "two billion, four hundred forty-four million, seven hundred forty-nine thousand, three hundred eighty-one".