1444197081 has 16 divisors (see below), whose sum is σ = 1946551680. Its totient is φ = 952339200.

The previous prime is 1444197077. The next prime is 1444197101. The reversal of 1444197081 is 1807914441.

It is not a de Polignac number, because 1444197081 - 2² = 1444197077 is a prime.

It is a super-2 number, since 2×1444197081² = 4171410417537841122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1444197281) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 465985 + ... + 469073.

It is an arithmetic number, because the mean of its divisors is an integer number (121659480).

Almost surely, 2^1444197081 is an apocalyptic number.

It is an amenable number.

1444197081 is a deficient number, since it is larger than the sum of its proper divisors (502354599).

1444197081 is a wasteful number, since it uses less digits than its factorization.

1444197081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4736.

The product of its (nonzero) digits is 32256, while the sum is 39.

The square root of 1444197081 is about 38002.5930825779. The cubic root of 1444197081 is about 1130.3392828278.

The spelling of 1444197081 in words is "one billion, four hundred forty-four million, one hundred ninety-seven thousand, eighty-one".