1380612688 has 80 divisors (see below), whose sum is σ = 3354535296. Its totient is φ = 535841280.

The previous prime is 1380612671. The next prime is 1380612689. The reversal of 1380612688 is 8862160831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1380612689) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 68223 + ... + 86113.

Almost surely, 2^1380612688 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 1380612688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1677267648).

1380612688 is an abundant number, since it is smaller than the sum of its proper divisors (1973922608).

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

1380612688 is a wasteful number, since it uses less digits than its factorization.

1380612688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17972 (or 17966 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 43.

The square root of 1380612688 is about 37156.5968301727. The cubic root of 1380612688 is about 1113.5010223072.

The spelling of 1380612688 in words is "one billion, three hundred eighty million, six hundred twelve thousand, six hundred eighty-eight".