1044622645 has 48 divisors (see below), whose sum is σ = 1418933376. Its totient is φ = 737475200.

The previous prime is 1044622639. The next prime is 1044622687. The reversal of 1044622645 is 5462264401.

1044622645 = T₂₈₄ + T₂₈₅ + ... + T₁₈₄₅.

It is not a de Polignac number, because 1044622645 - 2¹¹ = 1044620597 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1044622645.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3565119 + ... + 3565411.

It is an arithmetic number, because the mean of its divisors is an integer number (29561112).

Almost surely, 2^1044622645 is an apocalyptic number.

It is an amenable number.

1044622645 is a deficient number, since it is larger than the sum of its proper divisors (374310731).

1044622645 is a wasteful number, since it uses less digits than its factorization.

1044622645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 474 (or 463 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 34.

The square root of 1044622645 is about 32320.6225961073. The cubic root of 1044622645 is about 1014.6582994032.

The spelling of 1044622645 in words is "one billion, forty-four million, six hundred twenty-two thousand, six hundred forty-five".