654135444 has 18 divisors (see below), whose sum is σ = 1653509130. Its totient is φ = 218045136.

The previous prime is 654135437. The next prime is 654135481. The reversal of 654135444 is 444531456.

654135444 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 340845444 + 313290000 = 18462^2 + 17700^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 18170429 = 654135444 / (6 + 5 + 4 + 1 + 3 + 5 + 4 + 4 + 4).

It is a junction number, because it is equal to n+sod(n) for n = 654135399 and 654135408.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9085179 + ... + 9085250.

Almost surely, 2^654135444 is an apocalyptic number.

It is an amenable number.

654135444 is an abundant number, since it is smaller than the sum of its proper divisors (999373686).

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

654135444 is a wasteful number, since it uses less digits than its factorization.

654135444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18170439 (or 18170434 counting only the distinct ones).

The product of its digits is 115200, while the sum is 36.

The square root of 654135444 is about 25576.0717077506. The cubic root of 654135444 is about 868.0722914724.

The spelling of 654135444 in words is "six hundred fifty-four million, one hundred thirty-five thousand, four hundred forty-four".