549990318 has 16 divisors (see below), whose sum is σ = 1126809936. Its totient is φ = 178858560.

The previous prime is 549990317. The next prime is 549990367. The reversal of 549990318 is 813099945.

It is a super-2 number, since 2×549990318² = 604978699787482248, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (549990317) 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, 1117621 + ... + 1118112.

It is an arithmetic number, because the mean of its divisors is an integer number (70425621).

Almost surely, 2^549990318 is an apocalyptic number.

549990318 is an abundant number, since it is smaller than the sum of its proper divisors (576819618).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

549990318 is a wasteful number, since it uses less digits than its factorization.

549990318 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2235779.

The product of its (nonzero) digits is 349920, while the sum is 48.

The square root of 549990318 is about 23451.8723772751. The cubic root of 549990318 is about 819.3164628945.

The spelling of 549990318 in words is "five hundred forty-nine million, nine hundred ninety thousand, three hundred eighteen".