2543261885 has 8 divisors (see below), whose sum is σ = 3116848896. Its totient is φ = 1991319760.

The previous prime is 2543261881. The next prime is 2543261909. The reversal of 2543261885 is 5881623452.

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

It is not a de Polignac number, because 2543261885 - 2² = 2543261881 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 (2543261881) 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, 5410961 + ... + 5411430.

It is an arithmetic number, because the mean of its divisors is an integer number (389606112).

Almost surely, 2^2543261885 is an apocalyptic number.

It is an amenable number.

2543261885 is a deficient number, since it is larger than the sum of its proper divisors (573587011).

2543261885 is a wasteful number, since it uses less digits than its factorization.

2543261885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10822443.

The product of its digits is 460800, while the sum is 44.

The square root of 2543261885 is about 50430.7632799663. The cubic root of 2543261885 is about 1364.9928009746.

The spelling of 2543261885 in words is "two billion, five hundred forty-three million, two hundred sixty-one thousand, eight hundred eighty-five".