1444971164 has 48 divisors (see below), whose sum is σ = 3134745600. Its totient is φ = 567504576.

The previous prime is 1444971161. The next prime is 1444971167. The reversal of 1444971164 is 4611794441.

It is an interprime number because it is at equal distance from previous prime (1444971161) and next prime (1444971167).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1444971161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36317 + ... + 64875.

It is an arithmetic number, because the mean of its divisors is an integer number (65307200).

Almost surely, 2^1444971164 is an apocalyptic number.

1444971164 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1444971164, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1567372800).

1444971164 is an abundant number, since it is smaller than the sum of its proper divisors (1689774436).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1444971164 is a wasteful number, since it uses less digits than its factorization.

1444971164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28722 (or 28720 counting only the distinct ones).

The product of its digits is 96768, while the sum is 41.

The square root of 1444971164 is about 38012.7763258618. The cubic root of 1444971164 is about 1130.5411989774.

The spelling of 1444971164 in words is "one billion, four hundred forty-four million, nine hundred seventy-one thousand, one hundred sixty-four".