1444331892 has 96 divisors (see below), whose sum is σ = 3731011200. Its totient is φ = 433036800.

The previous prime is 1444331879. The next prime is 1444331923. The reversal of 1444331892 is 2981334441.

It is a super-2 number, since 2×1444331892² = 4172189228496599328, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1444331892.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 401542 + ... + 405122.

It is an arithmetic number, because the mean of its divisors is an integer number (38864700).

Almost surely, 2^1444331892 is an apocalyptic number.

1444331892 is a gapful number since it is divisible by the number (12) 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 1444331892, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1865505600).

1444331892 is an abundant number, since it is smaller than the sum of its proper divisors (2286679308).

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

1444331892 is a wasteful number, since it uses less digits than its factorization.

1444331892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3697 (or 3695 counting only the distinct ones).

The product of its digits is 82944, while the sum is 39.

The square root of 1444331892 is about 38004.3667490987. The cubic root of 1444331892 is about 1130.3744528725.

It can be divided in two parts, 1444 and 331892, that added together give a triangular number (333336 = T₈₁₆).

The spelling of 1444331892 in words is "one billion, four hundred forty-four million, three hundred thirty-one thousand, eight hundred ninety-two".