1040644992 has 32 divisors (see below), whose sum is σ = 2764214280. Its totient is φ = 346881536.

The previous prime is 1040644981. The next prime is 1040645027. The reversal of 1040644992 is 2994460401.

1040644992 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (32).

It is a self number, because there is not a number n which added to its sum of digits gives 1040644992.

It is a congruent number.

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, 1354623 + ... + 1355390.

Almost surely, 2^1040644992 is an apocalyptic number.

1040644992 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1040644992 is an abundant number, since it is smaller than the sum of its proper divisors (1723569288).

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

1040644992 is an equidigital number, since it uses as much as digits as its factorization.

1040644992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2710030 (or 2710018 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 39.

The square root of 1040644992 is about 32259.0296196274. The cubic root of 1040644992 is about 1013.3688091612.

The spelling of 1040644992 in words is "one billion, forty million, six hundred forty-four thousand, nine hundred ninety-two".