1036646809 has 9 divisors (see below), whose sum is σ = 1139844181. Its totient is φ = 942084220.

The previous prime is 1036646761. The next prime is 1036646837. The reversal of 1036646809 is 9086466301.

The square root of 1036646809 is 32197.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 1036646809 - 2²⁹ = 499775897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1036646309) 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 8 ways as a sum of consecutive naturals, for example, 352704 + ... + 355630.

Almost surely, 2^1036646809 is an apocalyptic number.

1036646809 is the 32197-th square number.

1036646809 is the 16099-th centered octagonal number.

It is an amenable number.

1036646809 is a deficient number, since it is larger than the sum of its proper divisors (103197372).

1036646809 is an frugal number, since it uses more digits than its factorization.

1036646809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5876 (or 2938 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 43.

The cubic root of 1036646809 is about 1012.0693477998.

Multiplying 1036646809 by its product of nonzero digits (186624), we get a square (193463174082816 = 13909104²).

It can be divided in two parts, 10366 and 46809, that added together give a palindrome (57175).

The spelling of 1036646809 in words is "one billion, thirty-six million, six hundred forty-six thousand, eight hundred nine".