2154804143 has 2 divisors, whose sum is σ = 2154804144. Its totient is φ = 2154804142.

The previous prime is 2154804109. The next prime is 2154804161. The reversal of 2154804143 is 3414084512.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2154804143 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2154804103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1077402071 + 1077402072.

It is an arithmetic number, because the mean of its divisors is an integer number (1077402072).

Almost surely, 2^2154804143 is an apocalyptic number.

2154804143 is a deficient number, since it is larger than the sum of its proper divisors (1).

2154804143 is an equidigital number, since it uses as much as digits as its factorization.

2154804143 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15360, while the sum is 32.

The square root of 2154804143 is about 46419.8679769773. The cubic root of 2154804143 is about 1291.6234878737.

Adding to 2154804143 its reverse (3414084512), we get a palindrome (5568888655).

The spelling of 2154804143 in words is "two billion, one hundred fifty-four million, eight hundred four thousand, one hundred forty-three".