2427843881 has 6 divisors (see below), whose sum is σ = 2438018046. Its totient is φ = 2417712000.

The previous prime is 2427843853. The next prime is 2427843907. The reversal of 2427843881 is 1883487242.

It is a happy number.

2427843881 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 205664281 + 2222179600 = 14341^2 + 47140^2 .

It is not a de Polignac number, because 2427843881 - 2¹⁴ = 2427827497 is a prime.

It is a super-2 number, since 2×2427843881² = 11788851821018284322, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2427843841) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 37181 + ... + 78981.

It is an arithmetic number, because the mean of its divisors is an integer number (406336341).

Almost surely, 2^2427843881 is an apocalyptic number.

It is an amenable number.

2427843881 is a deficient number, since it is larger than the sum of its proper divisors (10174165).

2427843881 is an frugal number, since it uses more digits than its factorization.

2427843881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42283 (or 42042 counting only the distinct ones).

The product of its digits is 688128, while the sum is 47.

The square root of 2427843881 is about 49273.1557848693. The cubic root of 2427843881 is about 1344.0236749494.

The spelling of 2427843881 in words is "two billion, four hundred twenty-seven million, eight hundred forty-three thousand, eight hundred eighty-one".