1438287280770 has 128 divisors (see below), whose sum is σ = 3717676362240. Its totient is φ = 355372738560.

The previous prime is 1438287280687. The next prime is 1438287280783. The reversal of 1438287280770 is 770827828341.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1438287280770.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2043835 + ... + 2655905.

It is an arithmetic number, because the mean of its divisors is an integer number (29044346580).

Almost surely, 2^{1438287280770} is an apocalyptic number.

1438287280770 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1438287280770, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1858838181120).

1438287280770 is an abundant number, since it is smaller than the sum of its proper divisors (2279389081470).

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

1438287280770 is a wasteful number, since it uses less digits than its factorization.

1438287280770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 612220.

The product of its (nonzero) digits is 8429568, while the sum is 57.

The spelling of 1438287280770 in words is "one trillion, four hundred thirty-eight billion, two hundred eighty-seven million, two hundred eighty thousand, seven hundred seventy".