368820009 has 6 divisors (see below), whose sum is σ = 532740026. Its totient is φ = 245880000.

The previous prime is 368820007. The next prime is 368820071. The reversal of 368820009 is 900028863.

It can be written as a sum of positive squares in only one way, i.e., 297045225 + 71774784 = 17235^2 + 8472^2 .

It is not a de Polignac number, because 368820009 - 2¹ = 368820007 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (368820007) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 20489992 + ... + 20490009.

Almost surely, 2^368820009 is an apocalyptic number.

It is an amenable number.

368820009 is a deficient number, since it is larger than the sum of its proper divisors (163920017).

368820009 is a wasteful number, since it uses less digits than its factorization.

368820009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40980007 (or 40980004 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 368820009 is about 19204.6871622529. The cubic root of 368820009 is about 717.1414495415.

The spelling of 368820009 in words is "three hundred sixty-eight million, eight hundred twenty thousand, nine".