549538454919 has 8 divisors (see below), whose sum is σ = 732907631232. Its totient is φ = 366264124280.

The previous prime is 549538454917. The next prime is 549538454951. The reversal of 549538454919 is 919454835945.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 549538454919 - 2¹ = 549538454917 is a prime.

It is a super-2 number, since 2×549538454919² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 549538454919.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (549538454917) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23697897 + ... + 23721074.

It is an arithmetic number, because the mean of its divisors is an integer number (91613453904).

Almost surely, 2^549538454919 is an apocalyptic number.

549538454919 is a deficient number, since it is larger than the sum of its proper divisors (183369176313).

549538454919 is a wasteful number, since it uses less digits than its factorization.

549538454919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47422837.

The product of its digits is 139968000, while the sum is 66.

The spelling of 549538454919 in words is "five hundred forty-nine billion, five hundred thirty-eight million, four hundred fifty-four thousand, nine hundred nineteen".