1394869105728 has 84 divisors (see below), whose sum is σ = 4569303373440. Its totient is φ = 398534029056.

The previous prime is 1394869105723. The next prime is 1394869105771. The reversal of 1394869105728 is 8275019684931.

1394869105728 is a `hidden beast` number, since 1 + 3 + 9 + 48 + 6 + 9 + 10 + 572 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (84).

It is a super-2 number, since 2×1394869105728² (a number of 25 digits) contains 22 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (1394869105723) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 172970808 + ... + 172978871.

It is a 1-persistent number, because it is pandigital, but 2⋅1394869105728 = 2789738211456 is not.

Almost surely, 2^{1394869105728} is an apocalyptic number.

1394869105728 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1394869105728 is an abundant number, since it is smaller than the sum of its proper divisors (3174434267712).

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

1394869105728 is a wasteful number, since it uses less digits than its factorization.

1394869105728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 345949704 (or 345949691 counting only the distinct ones).

The product of its (nonzero) digits is 26127360, while the sum is 63.

The spelling of 1394869105728 in words is "one trillion, three hundred ninety-four billion, eight hundred sixty-nine million, one hundred five thousand, seven hundred twenty-eight".