1044045636 has 12 divisors (see below), whose sum is σ = 2436106512. Its totient is φ = 348015208.

The previous prime is 1044045589. The next prime is 1044045661. The reversal of 1044045636 is 6365404401.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 1044045597 and 1044045606.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43501890 + ... + 43501913.

It is an arithmetic number, because the mean of its divisors is an integer number (203008876).

Almost surely, 2^1044045636 is an apocalyptic number.

It is an amenable number.

1044045636 is an abundant number, since it is smaller than the sum of its proper divisors (1392060876).

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

1044045636 is a wasteful number, since it uses less digits than its factorization.

1044045636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87003810 (or 87003808 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 33.

The square root of 1044045636 is about 32311.6950344608. The cubic root of 1044045636 is about 1014.4714457091.

The spelling of 1044045636 in words is "one billion, forty-four million, forty-five thousand, six hundred thirty-six".