1444335144 has 64 divisors (see below), whose sum is σ = 4131993600. Its totient is φ = 412135104.

The previous prime is 1444335143. The next prime is 1444335199. The reversal of 1444335144 is 4415334441.

It is a super-2 number, since 2×1444335144² = 4172208016387001472, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1444335143) 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, 135829 + ... + 146075.

It is an arithmetic number, because the mean of its divisors is an integer number (64562400).

Almost surely, 2^1444335144 is an apocalyptic number.

1444335144 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1444335144 is an abundant number, since it is smaller than the sum of its proper divisors (2687658456).

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

1444335144 is a wasteful number, since it uses less digits than its factorization.

1444335144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11102 (or 11098 counting only the distinct ones).

The product of its digits is 46080, while the sum is 33.

The square root of 1444335144 is about 38004.4095336318. The cubic root of 1444335144 is about 1130.3753012406.

Adding to 1444335144 its reverse (4415334441), we get a palindrome (5859669585).

The spelling of 1444335144 in words is "one billion, four hundred forty-four million, three hundred thirty-five thousand, one hundred forty-four".