1380838858281 has 27 divisors (see below), whose sum is σ = 2118864695493. Its totient is φ = 866371092480.

The previous prime is 1380838858279. The next prime is 1380838858297. The reversal of 1380838858281 is 1828588380831.

The square root of 1380838858281 is 1175091.

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

1380838858281 is a `hidden beast` number, since 13 + 8 + 0 + 8 + 38 + 8 + 582 + 8 + 1 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 1191285225 + 1379647573056 = 34515^2 + 1174584^2 .

It is not a de Polignac number, because 1380838858281 - 2¹ = 1380838858279 is a prime.

It is a super-2 number, since 2×1380838858281² (a number of 25 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1380838858271) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 59918121 + ... + 59941161.

Almost surely, 2^{1380838858281} is an apocalyptic number.

1380838858281 is the 1175091-st square number.

1380838858281 is the 587546-th centered octagonal number.

It is an amenable number.

1380838858281 is a deficient number, since it is larger than the sum of its proper divisors (738025837212).

1380838858281 is an frugal number, since it uses more digits than its factorization.

1380838858281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46122 (or 23061 counting only the distinct ones).

The product of its (nonzero) digits is 23592960, while the sum is 63.

The spelling of 1380838858281 in words is "one trillion, three hundred eighty billion, eight hundred thirty-eight million, eight hundred fifty-eight thousand, two hundred eighty-one".