1382939940581 has 4 divisors (see below), whose sum is σ = 1415101334592.
Its totient is φ = 1350778546572.
The previous prime is 1382939940563. The next prime is 1382939940583. The reversal of 1382939940581 is 1850499392831.
It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.
It is a cyclic number.
It is not a de Polignac number, because 1382939940581 - 218 = 1382939678437 is a prime.
It is a super-2 number, since 2×13829399405812 (a number of 25 digits) contains 22 as substring.
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (1382939940583) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (23) of ones.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16080696941 + ... + 16080697026.
It is an arithmetic number, because the mean of its divisors is an integer number (353775333648).
Almost surely, 21382939940581 is an apocalyptic number.
It is an amenable number.
1382939940581 is a deficient number, since it is larger than the sum of its proper divisors (32161394011).
1382939940581 is an equidigital number, since it uses as much as digits as its factorization.
1382939940581 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 32161394010.
The product of its (nonzero) digits is 16796160, while the sum is 62.
The spelling of 1382939940581 in words is "one trillion, three hundred eighty-two billion, nine hundred thirty-nine million, nine hundred forty thousand, five hundred eighty-one".