285427444181 has 8 divisors (see below), whose sum is σ = 311380223328. Its totient is φ = 259475470000.

The previous prime is 285427444163. The next prime is 285427444201. The reversal of 285427444181 is 181444724582.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 285427444181 - 2¹⁰ = 285427443157 is a prime.

It is a super-2 number, since 2×285427444181² (a number of 24 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 (285427444681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 725906 + ... + 1047756.

It is an arithmetic number, because the mean of its divisors is an integer number (38922527916).

Almost surely, 2^285427444181 is an apocalyptic number.

It is an amenable number.

285427444181 is a deficient number, since it is larger than the sum of its proper divisors (25952779147).

285427444181 is a wasteful number, since it uses less digits than its factorization.

285427444181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 402483.

The product of its digits is 2293760, while the sum is 50.

The spelling of 285427444181 in words is "two hundred eighty-five billion, four hundred twenty-seven million, four hundred forty-four thousand, one hundred eighty-one".