1040355644 has 6 divisors (see below), whose sum is σ = 1820622384. Its totient is φ = 520177820.

The previous prime is 1040355611. The next prime is 1040355649. The reversal of 1040355644 is 4465530401.

It is a self number, because there is not a number n which added to its sum of digits gives 1040355644.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1040355649) by changing a digit.

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 as a sum of consecutive naturals, namely, 130044452 + ... + 130044459.

It is an arithmetic number, because the mean of its divisors is an integer number (303437064).

Almost surely, 2^1040355644 is an apocalyptic number.

It is an amenable number.

1040355644 is a deficient number, since it is larger than the sum of its proper divisors (780266740).

1040355644 is a wasteful number, since it uses less digits than its factorization.

1040355644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260088915 (or 260088913 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 32.

The square root of 1040355644 is about 32254.5445480168. The cubic root of 1040355644 is about 1013.2748791401.

The spelling of 1040355644 in words is "one billion, forty million, three hundred fifty-five thousand, six hundred forty-four".