544866138 has 24 divisors (see below), whose sum is σ = 1209338676. Its totient is φ = 177192000.

The previous prime is 544866103. The next prime is 544866143. The reversal of 544866138 is 831668445.

It can be written as a sum of positive squares in 2 ways, for example, as 503688249 + 41177889 = 22443^2 + 6417^2 .

It is a junction number, because it is equal to n+sod(n) for n = 544866093 and 544866102.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 368413 + ... + 369888.

Almost surely, 2^544866138 is an apocalyptic number.

544866138 is an abundant number, since it is smaller than the sum of its proper divisors (664472538).

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

544866138 is a wasteful number, since it uses less digits than its factorization.

544866138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 738350 (or 738347 counting only the distinct ones).

The product of its digits is 552960, while the sum is 45.

The square root of 544866138 is about 23342.3678747466. The cubic root of 544866138 is about 816.7640353340.

The spelling of 544866138 in words is "five hundred forty-four million, eight hundred sixty-six thousand, one hundred thirty-eight".