1444538163 has 16 divisors (see below), whose sum is σ = 1942308000. Its totient is φ = 954919680.

The previous prime is 1444538159. The next prime is 1444538167. The reversal of 1444538163 is 3618354441.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1444538159) and next prime (1444538167).

It is not a de Polignac number, because 1444538163 - 2² = 1444538159 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1444538167) 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 in 15 ways as a sum of consecutive naturals, for example, 293023 + ... + 297911.

It is an arithmetic number, because the mean of its divisors is an integer number (121394250).

Almost surely, 2^1444538163 is an apocalyptic number.

1444538163 is a deficient number, since it is larger than the sum of its proper divisors (497769837).

1444538163 is a wasteful number, since it uses less digits than its factorization.

1444538163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5702.

The product of its digits is 138240, while the sum is 39.

The square root of 1444538163 is about 38007.0804324668. The cubic root of 1444538163 is about 1130.4282614584.

The spelling of 1444538163 in words is "one billion, four hundred forty-four million, five hundred thirty-eight thousand, one hundred sixty-three".