1393798889728 has 288 divisors, whose sum is σ = 3396737514240. Its totient is φ = 557206732800.

The previous prime is 1393798889699. The next prime is 1393798889729. The reversal of 1393798889728 is 8279888973931.

It is not an unprimeable number, because it can be changed into a prime (1393798889729) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2319132628 + ... + 2319133228.

It is an arithmetic number, because the mean of its divisors is an integer number (11794227480).

Almost surely, 2^{1393798889728} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1393798889728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1698368757120).

1393798889728 is an abundant number, since it is smaller than the sum of its proper divisors (2002938624512).

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

1393798889728 is a wasteful number, since it uses less digits than its factorization.

1393798889728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1193 (or 1179 counting only the distinct ones).

The product of its digits is 2633637888, while the sum is 82.

The spelling of 1393798889728 in words is "one trillion, three hundred ninety-three billion, seven hundred ninety-eight million, eight hundred eighty-nine thousand, seven hundred twenty-eight".