1389093780816 has 240 divisors, whose sum is σ = 4636807919744. Its totient is φ = 394354801152.

The previous prime is 1389093780761. The next prime is 1389093780827. The reversal of 1389093780816 is 6180873909831.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4110366 + ... + 4435458.

Almost surely, 2^{1389093780816} is an apocalyptic number.

1389093780816 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1389093780816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2318403959872).

1389093780816 is an abundant number, since it is smaller than the sum of its proper divisors (3247714138928).

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

1389093780816 is a wasteful number, since it uses less digits than its factorization.

1389093780816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 325280 (or 325262 counting only the distinct ones).

The product of its (nonzero) digits is 15676416, while the sum is 63.

The spelling of 1389093780816 in words is "one trillion, three hundred eighty-nine billion, ninety-three million, seven hundred eighty thousand, eight hundred sixteen".