543851849 has 4 divisors (see below), whose sum is σ = 544269264. Its totient is φ = 543434436.

The previous prime is 543851837. The next prime is 543851851. The reversal of 543851849 is 948158345.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 948158345 = 5 ⋅189631669.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-543851849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (543851809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 206747 + ... + 209360.

It is an arithmetic number, because the mean of its divisors is an integer number (136067316).

Almost surely, 2^543851849 is an apocalyptic number.

It is an amenable number.

543851849 is a deficient number, since it is larger than the sum of its proper divisors (417415).

543851849 is a wasteful number, since it uses less digits than its factorization.

543851849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 417414.

The product of its digits is 691200, while the sum is 47.

The square root of 543851849 is about 23320.6314022584. The cubic root of 543851849 is about 816.2569081056.

The spelling of 543851849 in words is "five hundred forty-three million, eight hundred fifty-one thousand, eight hundred forty-nine".