1048389640281 has 9 divisors (see below), whose sum is σ = 1514345028469. Its totient is φ = 698924379036.

The previous prime is 1048389640213. The next prime is 1048389640313. The reversal of 1048389640281 is 1820469838401.

It is a happy number.

The square root of 1048389640281 is 1023909.

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

1048389640281 is a `hidden beast` number, since 1 + 0 + 4 + 83 + 89 + 6 + 402 + 81 = 666.

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 1048389640281 - 2⁷ = 1048389640153 is a prime.

It is a super-2 number, since 2×1048389640281² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1048389640211) by changing a digit.

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, 2901076 + ... + 3242378.

Almost surely, 2^{1048389640281} is an apocalyptic number.

1048389640281 is the 1023909-th square number.

1048389640281 is the 511955-th centered octagonal number.

It is an amenable number.

1048389640281 is a deficient number, since it is larger than the sum of its proper divisors (465955388188).

1048389640281 is an frugal number, since it uses more digits than its factorization.

1048389640281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 682612 (or 341306 counting only the distinct ones).

The product of its (nonzero) digits is 2654208, while the sum is 54.

The spelling of 1048389640281 in words is "one trillion, forty-eight billion, three hundred eighty-nine million, six hundred forty thousand, two hundred eighty-one".