1380105888 has 144 divisors (see below), whose sum is σ = 4370466240. Its totient is φ = 373496832.

The previous prime is 1380105877. The next prime is 1380105893. The reversal of 1380105888 is 8885010831.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 239748 + ... + 245436.

It is an arithmetic number, because the mean of its divisors is an integer number (30350460).

Almost surely, 2^1380105888 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1380105888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2185233120).

1380105888 is an abundant number, since it is smaller than the sum of its proper divisors (2990360352).

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

1380105888 is a wasteful number, since it uses less digits than its factorization.

1380105888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5747 (or 5720 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 42.

The square root of 1380105888 is about 37149.7764192465. The cubic root of 1380105888 is about 1113.3647563850.

The spelling of 1380105888 in words is "one billion, three hundred eighty million, one hundred five thousand, eight hundred eighty-eight".