1854284081841 has 9 divisors (see below), whose sum is σ = 2678416241241. Its totient is φ = 1236186664452.

The previous prime is 1854284081827. The next prime is 1854284081857. The reversal of 1854284081841 is 1481804824581.

The square root of 1854284081841 is 1361721.

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

1854284081841 is a `hidden beast` number, since 1 + 8 + 54 + 2 + 8 + 408 + 184 + 1 = 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 1854284081841 - 2¹¹ = 1854284079793 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1854284081801) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 3858210 + ... + 4312116.

Almost surely, 2^{1854284081841} is an apocalyptic number.

1854284081841 is the 1361721-st square number.

1854284081841 is the 680861-st centered octagonal number.

It is an amenable number.

1854284081841 is a deficient number, since it is larger than the sum of its proper divisors (824132159400).

1854284081841 is an frugal number, since it uses more digits than its factorization.

1854284081841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 907820 (or 453910 counting only the distinct ones).

The product of its (nonzero) digits is 2621440, while the sum is 54.

The spelling of 1854284081841 in words is "one trillion, eight hundred fifty-four billion, two hundred eighty-four million, eighty-one thousand, eight hundred forty-one".