1380638387832 has 64 divisors (see below), whose sum is σ = 3765574949760. Its totient is φ = 418353321600.

The previous prime is 1380638387789. The next prime is 1380638387899. The reversal of 1380638387832 is 2387838360831.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5314438 + ... + 5568170.

It is an arithmetic number, because the mean of its divisors is an integer number (58837108590).

Almost surely, 2^{1380638387832} is an apocalyptic number.

1380638387832 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1380638387832 is an abundant number, since it is smaller than the sum of its proper divisors (2384936561928).

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

1380638387832 is a wasteful number, since it uses less digits than its factorization.

1380638387832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 274364 (or 274360 counting only the distinct ones).

The product of its (nonzero) digits is 27869184, while the sum is 60.

The spelling of 1380638387832 in words is "one trillion, three hundred eighty billion, six hundred thirty-eight million, three hundred eighty-seven thousand, eight hundred thirty-two".