1444461881 has 2 divisors, whose sum is σ = 1444461882. Its totient is φ = 1444461880.

The previous prime is 1444461859. The next prime is 1444461913. The reversal of 1444461881 is 1881644441.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1407750400 + 36711481 = 37520^2 + 6059^2 .

It is a cyclic number.

It is not a de Polignac number, because 1444461881 - 2²⁶ = 1377353017 is a prime.

It is a super-2 number, since 2×1444461881² = 4172940251324116322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1444461181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 722230940 + 722230941.

It is an arithmetic number, because the mean of its divisors is an integer number (722230941).

Almost surely, 2^1444461881 is an apocalyptic number.

It is an amenable number.

1444461881 is a deficient number, since it is larger than the sum of its proper divisors (1).

1444461881 is an equidigital number, since it uses as much as digits as its factorization.

1444461881 is an evil number, because the sum of its binary digits is even.

The product of its digits is 98304, while the sum is 41.

The square root of 1444461881 is about 38006.0768956755. The cubic root of 1444461881 is about 1130.4083628618.

The spelling of 1444461881 in words is "one billion, four hundred forty-four million, four hundred sixty-one thousand, eight hundred eighty-one".