2543470861 has 8 divisors (see below), whose sum is σ = 2704265784. Its totient is φ = 2383918080.

The previous prime is 2543470849. The next prime is 2543470883. The reversal of 2543470861 is 1680743452.

It can be written as a sum of positive squares in 4 ways, for example, as 1839895236 + 703575625 = 42894^2 + 26525^2 .

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 2543470861 - 2²⁵ = 2509916429 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 (2543470261) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 306310 + ... + 314503.

It is an arithmetic number, because the mean of its divisors is an integer number (338033223).

Almost surely, 2^2543470861 is an apocalyptic number.

It is an amenable number.

2543470861 is a deficient number, since it is larger than the sum of its proper divisors (160794923).

2543470861 is a wasteful number, since it uses less digits than its factorization.

2543470861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 621071.

The product of its (nonzero) digits is 161280, while the sum is 40.

The square root of 2543470861 is about 50432.8351473522. The cubic root of 2543470861 is about 1365.0301864184.

The spelling of 2543470861 in words is "two billion, five hundred forty-three million, four hundred seventy thousand, eight hundred sixty-one".