2543351851 has 4 divisors (see below), whose sum is σ = 2543800000. Its totient is φ = 2542903704.

The previous prime is 2543351813. The next prime is 2543351887. The reversal of 2543351851 is 1581533452.

2543351851 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 2543351851 - 2¹³ = 2543343659 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2543351851.

It is not an unprimeable number, because it can be changed into a prime (2543351051) 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, 215451 + ... + 226948.

It is an arithmetic number, because the mean of its divisors is an integer number (635950000).

Almost surely, 2^2543351851 is an apocalyptic number.

2543351851 is a deficient number, since it is larger than the sum of its proper divisors (448149).

2543351851 is an equidigital number, since it uses as much as digits as its factorization.

2543351851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 448148.

The product of its digits is 72000, while the sum is 37.

The square root of 2543351851 is about 50431.6552474733. The cubic root of 2543351851 is about 1365.0088959870.

It can be divided in two parts, 25433 and 51851, that added together give a square (77284 = 278²).

The spelling of 2543351851 in words is "two billion, five hundred forty-three million, three hundred fifty-one thousand, eight hundred fifty-one".