1398344090256 has 45 divisors (see below), whose sum is σ = 3913461021379. Its totient is φ = 466109966688.

The previous prime is 1398344090173. The next prime is 1398344090263. The reversal of 1398344090256 is 6520904438931.

The square root of 1398344090256 is 1182516.

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

1398344090256 is a `hidden beast` number, since 1 + 3 + 98 + 3 + 440 + 90 + 25 + 6 = 666.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 14140921 + ... + 14239463.

Almost surely, 2^{1398344090256} is an apocalyptic number.

1398344090256 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

1398344090256 is the 1182516-th square number.

It is an amenable number.

1398344090256 is an abundant number, since it is smaller than the sum of its proper divisors (2515116931123).

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

1398344090256 is an frugal number, since it uses more digits than its factorization.

1398344090256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197100 (or 98548 counting only the distinct ones).

The product of its (nonzero) digits is 5598720, while the sum is 54.

The spelling of 1398344090256 in words is "one trillion, three hundred ninety-eight billion, three hundred forty-four million, ninety thousand, two hundred fifty-six".