1040644578 has 32 divisors (see below), whose sum is σ = 2127845376. Its totient is φ = 339138128.

The previous prime is 1040644547. The next prime is 1040644589. The reversal of 1040644578 is 8754460401.

It is a super-2 number, since 2×1040644578² = 2165882275441596168, which contains 22 as substring.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 428275 + ... + 430697.

It is an arithmetic number, because the mean of its divisors is an integer number (66495168).

Almost surely, 2^1040644578 is an apocalyptic number.

1040644578 is an abundant number, since it is smaller than the sum of its proper divisors (1087200798).

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

1040644578 is a wasteful number, since it uses less digits than its factorization.

1040644578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3998.

The product of its (nonzero) digits is 107520, while the sum is 39.

The square root of 1040644578 is about 32259.0232028188. The cubic root of 1040644578 is about 1013.3686747783.

The spelling of 1040644578 in words is "one billion, forty million, six hundred forty-four thousand, five hundred seventy-eight".