1044655616 has 40 divisors (see below), whose sum is σ = 2096249760. Its totient is φ = 520081408.

The previous prime is 1044655583. The next prime is 1044655621. The reversal of 1044655616 is 6165564401.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1044655616.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 118100 + ... + 126636.

It is an arithmetic number, because the mean of its divisors is an integer number (52406244).

Almost surely, 2^1044655616 is an apocalyptic number.

1044655616 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1044655616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1048124880).

1044655616 is an abundant number, since it is smaller than the sum of its proper divisors (1051594144).

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

1044655616 is an frugal number, since it uses more digits than its factorization.

1044655616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8794 (or 8778 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 38.

The square root of 1044655616 is about 32321.1326534204. The cubic root of 1044655616 is about 1014.6689743734.

The spelling of 1044655616 in words is "one billion, forty-four million, six hundred fifty-five thousand, six hundred sixteen".