1608657044 has 24 divisors (see below), whose sum is σ = 2837625000. Its totient is φ = 797921280.

The previous prime is 1608657041. The next prime is 1608657049. The reversal of 1608657044 is 4407568061.

It can be written as a sum of positive squares in 4 ways, for example, as 59290000 + 1549367044 = 7700^2 + 39362^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1608656992 and 1608657010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1608657041) 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, 743324 + ... + 745484.

It is an arithmetic number, because the mean of its divisors is an integer number (118234375).

Almost surely, 2^1608657044 is an apocalyptic number.

It is an amenable number.

1608657044 is a deficient number, since it is larger than the sum of its proper divisors (1228967956).

1608657044 is a wasteful number, since it uses less digits than its factorization.

1608657044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3563 (or 3561 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 41.

The square root of 1608657044 is about 40108.0670688579. The cubic root of 1608657044 is about 1171.7127480386.

The spelling of 1608657044 in words is "one billion, six hundred eight million, six hundred fifty-seven thousand, forty-four".