1444424531 has 4 divisors (see below), whose sum is σ = 1575735864. Its totient is φ = 1313113200.

The previous prime is 1444424507. The next prime is 1444424543. The reversal of 1444424531 is 1354244441.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1354244441 = 11 ⋅123113131.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1444424531 is a prime.

It is a super-2 number, since 2×1444424531² = 4172724451509139922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1444424561) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65655650 + ... + 65655671.

It is an arithmetic number, because the mean of its divisors is an integer number (393933966).

Almost surely, 2^1444424531 is an apocalyptic number.

1444424531 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1444424531 is a deficient number, since it is larger than the sum of its proper divisors (131311333).

1444424531 is a wasteful number, since it uses less digits than its factorization.

1444424531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131311332.

The product of its digits is 30720, while the sum is 32.

The square root of 1444424531 is about 38005.5855237095. The cubic root of 1444424531 is about 1130.3986196449.

Adding to 1444424531 its reverse (1354244441), we get a palindrome (2798668972).

The spelling of 1444424531 in words is "one billion, four hundred forty-four million, four hundred twenty-four thousand, five hundred thirty-one".