1443225641 has 32 divisors (see below), whose sum is σ = 1757521920. Its totient is φ = 1167566400.

The previous prime is 1443225611. The next prime is 1443225647. The reversal of 1443225641 is 1465223441.

It is not a de Polignac number, because 1443225641 - 2⁶ = 1443225577 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1443225598 and 1443225607.

It is not an unprimeable number, because it can be changed into a prime (1443225647) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 484286 + ... + 487256.

It is an arithmetic number, because the mean of its divisors is an integer number (54922560).

Almost surely, 2^1443225641 is an apocalyptic number.

1443225641 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1443225641 is a deficient number, since it is larger than the sum of its proper divisors (314296279).

1443225641 is a wasteful number, since it uses less digits than its factorization.

1443225641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3117.

The product of its digits is 23040, while the sum is 32.

The square root of 1443225641 is about 37989.8096994444. The cubic root of 1443225641 is about 1130.0857848571.

The spelling of 1443225641 in words is "one billion, four hundred forty-three million, two hundred twenty-five thousand, six hundred forty-one".