1009641823 has 8 divisors (see below), whose sum is σ = 1016064000. Its totient is φ = 1003233528.

The previous prime is 1009641811. The next prime is 1009641859. The reversal of 1009641823 is 3281469001.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1009641823 - 2¹⁷ = 1009510751 is a prime.

It is a super-2 number, since 2×1009641823² = 2038753221501526658, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1009641223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 168798 + ... + 174676.

It is an arithmetic number, because the mean of its divisors is an integer number (127008000).

Almost surely, 2^1009641823 is an apocalyptic number.

1009641823 is a deficient number, since it is larger than the sum of its proper divisors (6422177).

1009641823 is an equidigital number, since it uses as much as digits as its factorization.

1009641823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6941.

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 1009641823 is about 31774.8614945840. The cubic root of 1009641823 is about 1003.2036665603.

The spelling of 1009641823 in words is "one billion, nine million, six hundred forty-one thousand, eight hundred twenty-three".