1044500985 has 24 divisors (see below), whose sum is σ = 1975057344. Its totient is φ = 506424480.

The previous prime is 1044500981. The next prime is 1044500993. The reversal of 1044500985 is 5890054401.

It is not a de Polignac number, because 1044500985 - 2² = 1044500981 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1044500981) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 1054557 + ... + 1055546.

It is an arithmetic number, because the mean of its divisors is an integer number (82294056).

Almost surely, 2^1044500985 is an apocalyptic number.

1044500985 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1044500985 is a deficient number, since it is larger than the sum of its proper divisors (930556359).

1044500985 is a wasteful number, since it uses less digits than its factorization.

1044500985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2110125 (or 2110122 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 36.

The square root of 1044500985 is about 32318.7404612247. The cubic root of 1044500985 is about 1014.6189077875.

The spelling of 1044500985 in words is "one billion, forty-four million, five hundred thousand, nine hundred eighty-five".