549347819 has 2 divisors, whose sum is σ = 549347820. Its totient is φ = 549347818.

The previous prime is 549347767. The next prime is 549347831. The reversal of 549347819 is 918743945.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 549347819 - 2⁸ = 549347563 is a prime.

It is a super-2 number, since 2×549347819² = 603566052480113522, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (549347839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 274673909 + 274673910.

It is an arithmetic number, because the mean of its divisors is an integer number (274673910).

Almost surely, 2^549347819 is an apocalyptic number.

549347819 is a deficient number, since it is larger than the sum of its proper divisors (1).

549347819 is an equidigital number, since it uses as much as digits as its factorization.

549347819 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1088640, while the sum is 50.

The square root of 549347819 is about 23438.1701290864. The cubic root of 549347819 is about 818.9972965940.

The spelling of 549347819 in words is "five hundred forty-nine million, three hundred forty-seven thousand, eight hundred nineteen".