1839854589381 has 12 divisors (see below), whose sum is σ = 2729393895852. Its totient is φ = 1193419192896.

The previous prime is 1839854589379. The next prime is 1839854589389.

1839854589381 is a `hidden beast` number, since 1 + 8 + 3 + 9 + 8 + 5 + 4 + 589 + 38 + 1 = 666.

1839854589381 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 2 ways, for example, as 1384140485025 + 455714104356 = 1176495^2 + 675066^2 .

It is not a de Polignac number, because 1839854589381 - 2¹ = 1839854589379 is a prime.

It is a super-2 number, since 2×1839854589381² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1839854589389) 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, 2762544096 + ... + 2762544761.

It is an arithmetic number, because the mean of its divisors is an integer number (227449491321).

Almost surely, 2^{1839854589381} is an apocalyptic number.

It is an amenable number.

1839854589381 is a deficient number, since it is larger than the sum of its proper divisors (889539306471).

1839854589381 is a wasteful number, since it uses less digits than its factorization.

1839854589381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5525088900 (or 5525088897 counting only the distinct ones).

The product of its digits is 298598400, while the sum is 72.

The spelling of 1839854589381 in words is "one trillion, eight hundred thirty-nine billion, eight hundred fifty-four million, five hundred eighty-nine thousand, three hundred eighty-one".