1444242181 has 2 divisors, whose sum is σ = 1444242182. Its totient is φ = 1444242180.

The previous prime is 1444242143. The next prime is 1444242211. The reversal of 1444242181 is 1812424441.

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., 1291324225 + 152917956 = 35935^2 + 12366^2 .

It is a cyclic number.

It is not a de Polignac number, because 1444242181 - 2¹⁵ = 1444209413 is a prime.

It is a super-2 number, since 2×1444242181² = 4171670954759273522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1444242101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 722121090 + 722121091.

It is an arithmetic number, because the mean of its divisors is an integer number (722121091).

Almost surely, 2^1444242181 is an apocalyptic number.

It is an amenable number.

1444242181 is a deficient number, since it is larger than the sum of its proper divisors (1).

1444242181 is an equidigital number, since it uses as much as digits as its factorization.

1444242181 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8192, while the sum is 31.

The square root of 1444242181 is about 38003.1864585063. The cubic root of 1444242181 is about 1130.3510489438.

The spelling of 1444242181 in words is "one billion, four hundred forty-four million, two hundred forty-two thousand, one hundred eighty-one".