1040945856 has 112 divisors (see below), whose sum is σ = 2910230400. Its totient is φ = 327462912.

The previous prime is 1040945813. The next prime is 1040945863. The reversal of 1040945856 is 6585490401.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1579255 + ... + 1579913.

It is an arithmetic number, because the mean of its divisors is an integer number (25984200).

Almost surely, 2^1040945856 is an apocalyptic number.

1040945856 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 1040945856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1455115200).

1040945856 is an abundant number, since it is smaller than the sum of its proper divisors (1869284544).

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

1040945856 is a wasteful number, since it uses less digits than its factorization.

1040945856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1126 (or 1116 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 42.

The square root of 1040945856 is about 32263.6925351083. The cubic root of 1040945856 is about 1013.4664591181.

It can be divided in two parts, 10409 and 45856, that added together give a palindrome (56265).

The spelling of 1040945856 in words is "one billion, forty million, nine hundred forty-five thousand, eight hundred fifty-six".