1380709788 has 24 divisors (see below), whose sum is σ = 3290203392. Its totient is φ = 450444144.

The previous prime is 1380709787. The next prime is 1380709789. The reversal of 1380709788 is 8879070831.

It is an interprime number because it is at equal distance from previous prime (1380709787) and next prime (1380709789).

It is a self number, because there is not a number n which added to its sum of digits gives 1380709788.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1380709787) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1223470 + ... + 1224597.

It is an arithmetic number, because the mean of its divisors is an integer number (137091808).

Almost surely, 2^1380709788 is an apocalyptic number.

It is an amenable number.

1380709788 is an abundant number, since it is smaller than the sum of its proper divisors (1909493604).

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

1380709788 is a wasteful number, since it uses less digits than its factorization.

1380709788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2448121 (or 2448119 counting only the distinct ones).

The product of its (nonzero) digits is 677376, while the sum is 51.

The square root of 1380709788 is about 37157.9034392416. The cubic root of 1380709788 is about 1113.5271262767.

The spelling of 1380709788 in words is "one billion, three hundred eighty million, seven hundred nine thousand, seven hundred eighty-eight".