244738381 has 4 divisors (see below), whose sum is σ = 244820700. Its totient is φ = 244656064.

The previous prime is 244738369. The next prime is 244738391. The reversal of 244738381 is 183837442.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 183837442 = 2 ⋅91918721.

It can be written as a sum of positive squares in 2 ways, for example, as 220077225 + 24661156 = 14835^2 + 4966^2 .

It is a cyclic number.

It is not a de Polignac number, because 244738381 - 2¹⁵ = 244705613 is a prime.

It is a super-2 number, since 2×244738381² = 119793750269002322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (244738321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36526 + ... + 42703.

It is an arithmetic number, because the mean of its divisors is an integer number (61205175).

Almost surely, 2^244738381 is an apocalyptic number.

It is an amenable number.

244738381 is a deficient number, since it is larger than the sum of its proper divisors (82319).

244738381 is an equidigital number, since it uses as much as digits as its factorization.

244738381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82318.

The product of its digits is 129024, while the sum is 40.

The square root of 244738381 is about 15644.1164979043. The cubic root of 244738381 is about 625.5096693864.

The spelling of 244738381 in words is "two hundred forty-four million, seven hundred thirty-eight thousand, three hundred eighty-one".