1854211315823 has 4 divisors (see below), whose sum is σ = 1855276344168. Its totient is φ = 1853146287480.

The previous prime is 1854211315763. The next prime is 1854211315867. The reversal of 1854211315823 is 3285131124581.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1854211315823 - 2¹⁰ = 1854211314799 is a prime.

It is a super-2 number, since 2×1854211315823² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1854211365823) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 532511561 + ... + 532515042.

It is an arithmetic number, because the mean of its divisors is an integer number (463819086042).

Almost surely, 2^{1854211315823} is an apocalyptic number.

1854211315823 is a deficient number, since it is larger than the sum of its proper divisors (1065028345).

1854211315823 is a wasteful number, since it uses less digits than its factorization.

1854211315823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1065028344.

The product of its digits is 230400, while the sum is 44.

The spelling of 1854211315823 in words is "one trillion, eight hundred fifty-four billion, two hundred eleven million, three hundred fifteen thousand, eight hundred twenty-three".