1381380888 has 32 divisors (see below), whose sum is σ = 3478305600. Its totient is φ = 457146528.

The previous prime is 1381380887. The next prime is 1381380941. The reversal of 1381380888 is 8880831831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1381380881) 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 7 ways as a sum of consecutive naturals, for example, 203706 + ... + 210377.

It is an arithmetic number, because the mean of its divisors is an integer number (108697050).

Almost surely, 2^1381380888 is an apocalyptic number.

It is an amenable number.

1381380888 is an abundant number, since it is smaller than the sum of its proper divisors (2096924712).

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

1381380888 is a wasteful number, since it uses less digits than its factorization.

1381380888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 414231 (or 414227 counting only the distinct ones).

The product of its (nonzero) digits is 294912, while the sum is 48.

The square root of 1381380888 is about 37166.9327225156. The cubic root of 1381380888 is about 1113.7075086229.

The spelling of 1381380888 in words is "one billion, three hundred eighty-one million, three hundred eighty thousand, eight hundred eighty-eight".