1388686414100 has 18 divisors (see below), whose sum is σ = 3013449518814. Its totient is φ = 555474565600.

The previous prime is 1388686414069. The next prime is 1388686414169. The reversal of 1388686414100 is 14146868831.

It can be written as a sum of positive squares in 3 ways, for example, as 12555650704 + 1376130763396 = 112052^2 + 1173086^2 .

It is a Harshad number since it is a multiple of its sum of digits (50).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6943431971 + ... + 6943432170.

Almost surely, 2^{1388686414100} is an apocalyptic number.

1388686414100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1388686414100 is an abundant number, since it is smaller than the sum of its proper divisors (1624763104714).

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

1388686414100 is a wasteful number, since it uses less digits than its factorization.

1388686414100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13886864155 (or 13886864148 counting only the distinct ones).

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

The spelling of 1388686414100 in words is "one trillion, three hundred eighty-eight billion, six hundred eighty-six million, four hundred fourteen thousand, one hundred".