1380526788 has 48 divisors (see below), whose sum is σ = 3337709760. Its totient is φ = 443587200.

The previous prime is 1380526783. The next prime is 1380526789. The reversal of 1380526788 is 8876250831.

It is not an unprimeable number, because it can be changed into a prime (1380526783) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 237598 + ... + 243338.

It is an arithmetic number, because the mean of its divisors is an integer number (69535620).

Almost surely, 2^1380526788 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 1380526788, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1668854880).

1380526788 is an abundant number, since it is smaller than the sum of its proper divisors (1957182972).

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

1380526788 is a wasteful number, since it uses less digits than its factorization.

1380526788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6468 (or 6466 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 48.

The square root of 1380526788 is about 37155.4408936296. The cubic root of 1380526788 is about 1113.4779282798.

The spelling of 1380526788 in words is "one billion, three hundred eighty million, five hundred twenty-six thousand, seven hundred eighty-eight".