1381317928146 has 96 divisors (see below), whose sum is σ = 3238312476672. Its totient is φ = 423014866560.

The previous prime is 1381317928117. The next prime is 1381317928147. The reversal of 1381317928146 is 6418297131831.

1381317928146 is a `hidden beast` number, since 1 + 3 + 8 + 1 + 317 + 9 + 281 + 46 = 666.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1381317928092 and 1381317928101.

It is not an unprimeable number, because it can be changed into a prime (1381317928147) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 64227631 + ... + 64249133.

It is an arithmetic number, because the mean of its divisors is an integer number (33732421632).

Almost surely, 2^{1381317928146} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1381317928146, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1619156238336).

1381317928146 is an abundant number, since it is smaller than the sum of its proper divisors (1856994548526).

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

1381317928146 is a wasteful number, since it uses less digits than its factorization.

1381317928146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22808 (or 22805 counting only the distinct ones).

The product of its digits is 1741824, while the sum is 54.

The spelling of 1381317928146 in words is "one trillion, three hundred eighty-one billion, three hundred seventeen million, nine hundred twenty-eight thousand, one hundred forty-six".