1444703681 has 2 divisors, whose sum is σ = 1444703682. Its totient is φ = 1444703680.

The previous prime is 1444703641. The next prime is 1444703683. The reversal of 1444703681 is 1863074441.

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., 1444684081 + 19600 = 38009^2 + 140^2 .

It is a cyclic number.

It is not a de Polignac number, because 1444703681 - 2²⁶ = 1377594817 is a prime.

It is a super-2 number, since 2×1444703681² = 4174337451789899522, which contains 22 as substring.

Together with 1444703683, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1444703683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 722351840 + 722351841.

It is an arithmetic number, because the mean of its divisors is an integer number (722351841).

Almost surely, 2^1444703681 is an apocalyptic number.

It is an amenable number.

1444703681 is a deficient number, since it is larger than the sum of its proper divisors (1).

1444703681 is an equidigital number, since it uses as much as digits as its factorization.

1444703681 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64512, while the sum is 38.

The square root of 1444703681 is about 38009.2578327965. The cubic root of 1444703681 is about 1130.4714353678.

The spelling of 1444703681 in words is "one billion, four hundred forty-four million, seven hundred three thousand, six hundred eighty-one".