1398645345786 has 64 divisors (see below), whose sum is σ = 3068556266496. Its totient is φ = 422370547200.

The previous prime is 1398645345767. The next prime is 1398645345817. The reversal of 1398645345786 is 6875435468931.

It is a self number, because there is not a number n which added to its sum of digits gives 1398645345786.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1852791 + ... + 2496021.

It is an arithmetic number, because the mean of its divisors is an integer number (47946191664).

Almost surely, 2^{1398645345786} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1398645345786, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1534278133248).

1398645345786 is an abundant number, since it is smaller than the sum of its proper divisors (1669910920710).

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

1398645345786 is a wasteful number, since it uses less digits than its factorization.

1398645345786 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 643767.

The product of its digits is 522547200, while the sum is 69.

The spelling of 1398645345786 in words is "one trillion, three hundred ninety-eight billion, six hundred forty-five million, three hundred forty-five thousand, seven hundred eighty-six".