1389766847982 has 48 divisors (see below), whose sum is σ = 3034680636240. Its totient is φ = 423740145024.

The previous prime is 1389766847977. The next prime is 1389766847983. The reversal of 1389766847982 is 2897486679831.

It is a junction number, because it is equal to n+sod(n) for n = 1389766847898 and 1389766847907.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1389766847983) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10999743 + ... + 11125370.

It is an arithmetic number, because the mean of its divisors is an integer number (63222513255).

Almost surely, 2^{1389766847982} is an apocalyptic number.

1389766847982 is an abundant number, since it is smaller than the sum of its proper divisors (1644913788258).

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

1389766847982 is a wasteful number, since it uses less digits than its factorization.

1389766847982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22125185 (or 22125166 counting only the distinct ones).

The product of its digits is 1755758592, while the sum is 78.

The spelling of 1389766847982 in words is "one trillion, three hundred eighty-nine billion, seven hundred sixty-six million, eight hundred forty-seven thousand, nine hundred eighty-two".