2144857061 has 4 divisors (see below), whose sum is σ = 2147108652. Its totient is φ = 2142605472.

The previous prime is 2144857027. The next prime is 2144857063. The reversal of 2144857061 is 1607584412.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1567368100 + 577488961 = 39590^2 + 24031^2 .

It is a cyclic number.

It is not a de Polignac number, because 2144857061 - 2³⁰ = 1071115237 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2144857063) 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, 1124366 + ... + 1126271.

It is an arithmetic number, because the mean of its divisors is an integer number (536777163).

Almost surely, 2^2144857061 is an apocalyptic number.

It is an amenable number.

2144857061 is a deficient number, since it is larger than the sum of its proper divisors (2251591).

2144857061 is an equidigital number, since it uses as much as digits as its factorization.

2144857061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2251590.

The product of its (nonzero) digits is 53760, while the sum is 38.

The square root of 2144857061 is about 46312.6015356512. The cubic root of 2144857061 is about 1289.6329426597.

The spelling of 2144857061 in words is "two billion, one hundred forty-four million, eight hundred fifty-seven thousand, sixty-one".