1443880020 has 48 divisors (see below), whose sum is σ = 4410399168. Its totient is φ = 350031360.

The previous prime is 1443880013. The next prime is 1443880033. The reversal of 1443880020 is 200883441.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a self number, because there is not a number n which added to its sum of digits gives 1443880020.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1093189 + ... + 1094508.

It is an arithmetic number, because the mean of its divisors is an integer number (91883316).

Almost surely, 2^1443880020 is an apocalyptic number.

1443880020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1443880020 is an abundant number, since it is smaller than the sum of its proper divisors (2966519148).

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

1443880020 is a wasteful number, since it uses less digits than its factorization.

1443880020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2187720 (or 2187718 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 30.

The square root of 1443880020 is about 37998.4212829954. The cubic root of 1443880020 is about 1130.2565580302.

The spelling of 1443880020 in words is "one billion, four hundred forty-three million, eight hundred eighty thousand, twenty".