2154205343 has 2 divisors, whose sum is σ = 2154205344. Its totient is φ = 2154205342.

The previous prime is 2154205307. The next prime is 2154205349. The reversal of 2154205343 is 3435024512.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2154205343 - 2⁶ = 2154205279 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2154205349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1077102671 + 1077102672.

It is an arithmetic number, because the mean of its divisors is an integer number (1077102672).

Almost surely, 2^2154205343 is an apocalyptic number.

2154205343 is a deficient number, since it is larger than the sum of its proper divisors (1).

2154205343 is an equidigital number, since it uses as much as digits as its factorization.

2154205343 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14400, while the sum is 29.

The square root of 2154205343 is about 46413.4177043665. The cubic root of 2154205343 is about 1291.5038334107.

Adding to 2154205343 its reverse (3435024512), we get a palindrome (5589229855).

The spelling of 2154205343 in words is "two billion, one hundred fifty-four million, two hundred five thousand, three hundred forty-three".