1444431132 has 18 divisors (see below), whose sum is σ = 3651201008. Its totient is φ = 481477032.

The previous prime is 1444431113. The next prime is 1444431133. The reversal of 1444431132 is 2311344441.

It is a tau number, because it is divible by the number of its divisors (18).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 1444431096 and 1444431105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1444431133) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 20061508 + ... + 20061579.

Almost surely, 2^1444431132 is an apocalyptic number.

1444431132 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1444431132 is an abundant number, since it is smaller than the sum of its proper divisors (2206769876).

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

1444431132 is a wasteful number, since it uses less digits than its factorization.

1444431132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40123097 (or 40123092 counting only the distinct ones).

The product of its digits is 4608, while the sum is 27.

The square root of 1444431132 is about 38005.6723661087. The cubic root of 1444431132 is about 1130.4003416109.

Adding to 1444431132 its reverse (2311344441), we get a palindrome (3755775573).

The spelling of 1444431132 in words is "one billion, four hundred forty-four million, four hundred thirty-one thousand, one hundred thirty-two".