1443111020 has 24 divisors (see below), whose sum is σ = 3263651664. Its totient is φ = 532840896.

The previous prime is 1443110951. The next prime is 1443111049. The reversal of 1443111020 is 201113441.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1443111020.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2774954 + ... + 2775473.

It is an arithmetic number, because the mean of its divisors is an integer number (135985486).

Almost surely, 2^1443111020 is an apocalyptic number.

1443111020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1443111020 is an abundant number, since it is smaller than the sum of its proper divisors (1820540644).

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

1443111020 is a wasteful number, since it uses less digits than its factorization.

1443111020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5550449 (or 5550447 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 1443111020 is about 37988.3010938894. The cubic root of 1443111020 is about 1130.0558669223.

Adding to 1443111020 its reverse (201113441), we get a palindrome (1644224461).

The spelling of 1443111020 in words is "one billion, four hundred forty-three million, one hundred eleven thousand, twenty".