1388608401380 has 24 divisors (see below), whose sum is σ = 3087611622648. Its totient is φ = 522770221568.

The previous prime is 1388608401371. The next prime is 1388608401413. The reversal of 1388608401380 is 831048068831.

It can be written as a sum of positive squares in 4 ways, for example, as 646226269924 + 742382131456 = 803882^2 + 861616^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2042070839 + ... + 2042071518.

It is an arithmetic number, because the mean of its divisors is an integer number (128650484277).

Almost surely, 2^{1388608401380} is an apocalyptic number.

1388608401380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1388608401380 is an abundant number, since it is smaller than the sum of its proper divisors (1699003221268).

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

1388608401380 is a wasteful number, since it uses less digits than its factorization.

1388608401380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4084142383 (or 4084142381 counting only the distinct ones).

The product of its (nonzero) digits is 884736, while the sum is 50.

The spelling of 1388608401380 in words is "one trillion, three hundred eighty-eight billion, six hundred eight million, four hundred one thousand, three hundred eighty".