1398741443856 has 135 divisors (see below), whose sum is σ = 3976534530423. Its totient is φ = 458976006720.

The previous prime is 1398741443821. The next prime is 1398741443867. The reversal of 1398741443856 is 6583441478931.

The square root of 1398741443856 is 1182684.

It is a perfect power (a square), and thus also a powerful number.

1398741443856 is a `hidden beast` number, since 1 + 39 + 87 + 4 + 1 + 443 + 85 + 6 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 1398741443793 and 1398741443802.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 950877201 + ... + 950878671.

Almost surely, 2^{1398741443856} is an apocalyptic number.

1398741443856 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

1398741443856 is the 1182684-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1398741443856

1398741443856 is an abundant number, since it is smaller than the sum of its proper divisors (2577793086567).

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

1398741443856 is an frugal number, since it uses more digits than its factorization.

1398741443856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3090 (or 1543 counting only the distinct ones).

The product of its digits is 69672960, while the sum is 63.

The spelling of 1398741443856 in words is "one trillion, three hundred ninety-eight billion, seven hundred forty-one million, four hundred forty-three thousand, eight hundred fifty-six".