1388041803612 has 36 divisors (see below), whose sum is σ = 3621843848896. Its totient is φ = 447755420160.

The previous prime is 1388041803563. The next prime is 1388041803613. The reversal of 1388041803612 is 2163081408831.

1388041803612 is a `hidden beast` number, since 1 + 38 + 80 + 4 + 180 + 361 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1388041803613) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 621881413 + ... + 621883644.

Almost surely, 2^{1388041803612} is an apocalyptic number.

1388041803612 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1388041803612 is an abundant number, since it is smaller than the sum of its proper divisors (2233802045284).

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

1388041803612 is a wasteful number, since it uses less digits than its factorization.

1388041803612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1243765098 (or 1243765093 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 45.

The spelling of 1388041803612 in words is "one trillion, three hundred eighty-eight billion, forty-one million, eight hundred three thousand, six hundred twelve".