41818009 has 4 divisors (see below), whose sum is σ = 41832720. Its totient is φ = 41803300.

The previous prime is 41818003. The next prime is 41818013. The reversal of 41818009 is 90081814.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 90081814 = 2 ⋅45040907.

It is a cyclic number.

It is not a de Polignac number, because 41818009 - 2⁹ = 41817497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (41818003) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1579 + ... + 9280.

It is an arithmetic number, because the mean of its divisors is an integer number (10458180).

Almost surely, 2^41818009 is an apocalyptic number.

It is an amenable number.

41818009 is a deficient number, since it is larger than the sum of its proper divisors (14711).

41818009 is a wasteful number, since it uses less digits than its factorization.

41818009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14710.

The product of its (nonzero) digits is 2304, while the sum is 31.

The square root of 41818009 is about 6466.6845446488. The cubic root of 41818009 is about 347.0998696557.

The spelling of 41818009 in words is "forty-one million, eight hundred eighteen thousand, nine".