1044642858 has 64 divisors (see below), whose sum is σ = 2462073600. Its totient is φ = 295335936.

The previous prime is 1044642853. The next prime is 1044642869. The reversal of 1044642858 is 8582464401.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1044642853) 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 31 ways as a sum of consecutive naturals, for example, 197010 + ... + 202242.

It is an arithmetic number, because the mean of its divisors is an integer number (38469900).

Almost surely, 2^1044642858 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1044642858, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1231036800).

1044642858 is an abundant number, since it is smaller than the sum of its proper divisors (1417430742).

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

1044642858 is an equidigital number, since it uses as much as digits as its factorization.

1044642858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5356 (or 5342 counting only the distinct ones).

The product of its (nonzero) digits is 245760, while the sum is 42.

The square root of 1044642858 is about 32320.9352896849. The cubic root of 1044642858 is about 1014.6648437619.

The spelling of 1044642858 in words is "one billion, forty-four million, six hundred forty-two thousand, eight hundred fifty-eight".