285449958831 has 4 divisors (see below), whose sum is σ = 380599945112. Its totient is φ = 190299972552.

The previous prime is 285449958823. The next prime is 285449958851. The reversal of 285449958831 is 138859944582.

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

It is not a de Polignac number, because 285449958831 - 2³ = 285449958823 is a prime.

It is a super-2 number, since 2×285449958831² (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 (285449958811) 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, 47574993136 + ... + 47574993141.

It is an arithmetic number, because the mean of its divisors is an integer number (95149986278).

Almost surely, 2^285449958831 is an apocalyptic number.

285449958831 is a deficient number, since it is larger than the sum of its proper divisors (95149986281).

285449958831 is an equidigital number, since it uses as much as digits as its factorization.

285449958831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95149986280.

The product of its digits is 99532800, while the sum is 66.

The spelling of 285449958831 in words is "two hundred eighty-five billion, four hundred forty-nine million, nine hundred fifty-eight thousand, eight hundred thirty-one".