1392843385081 has 8 divisors (see below), whose sum is σ = 1492682923584. Its totient is φ = 1296277274160.

The previous prime is 1392843385051. The next prime is 1392843385091. The reversal of 1392843385081 is 1805833482931.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1392843385081 - 2²⁹ = 1392306514169 is a prime.

It is a super-2 number, since 2×1392843385081² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1392843385051) 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 7 ways as a sum of consecutive naturals, for example, 818356015 + ... + 818357716.

It is an arithmetic number, because the mean of its divisors is an integer number (186585365448).

Almost surely, 2^{1392843385081} is an apocalyptic number.

It is an amenable number.

1392843385081 is a deficient number, since it is larger than the sum of its proper divisors (99839538503).

1392843385081 is a wasteful number, since it uses less digits than its factorization.

1392843385081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1636713791.

The product of its (nonzero) digits is 4976640, while the sum is 55.

The spelling of 1392843385081 in words is "one trillion, three hundred ninety-two billion, eight hundred forty-three million, three hundred eighty-five thousand, eighty-one".