549122638 has 4 divisors (see below), whose sum is σ = 823683960. Its totient is φ = 274561318.

The previous prime is 549122633. The next prime is 549122653. The reversal of 549122638 is 836221945.

549122638 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 549122638.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (549122633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 137280658 + ... + 137280661.

It is an arithmetic number, because the mean of its divisors is an integer number (205920990).

Almost surely, 2^549122638 is an apocalyptic number.

549122638 is a deficient number, since it is larger than the sum of its proper divisors (274561322).

549122638 is a wasteful number, since it uses less digits than its factorization.

549122638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 274561321.

The product of its digits is 103680, while the sum is 40.

The square root of 549122638 is about 23433.3659127322. The cubic root of 549122638 is about 818.8853773155.

The spelling of 549122638 in words is "five hundred forty-nine million, one hundred twenty-two thousand, six hundred thirty-eight".