409425018 has 8 divisors (see below), whose sum is σ = 818850048. Its totient is φ = 136475004.

The previous prime is 409425011. The next prime is 409425073. The reversal of 409425018 is 810524904.

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

409425018 is an admirable number.

It is a super-3 number, since 3×409425018³ (a number of 27 digits) contains 333 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 409425018.

It is not an unprimeable number, because it can be changed into a prime (409425011) 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, 34118746 + ... + 34118757.

It is an arithmetic number, because the mean of its divisors is an integer number (102356256).

Almost surely, 2^409425018 is an apocalyptic number.

409425018 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

409425018 is a wasteful number, since it uses less digits than its factorization.

409425018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68237508.

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 409425018 is about 20234.2535814890. The cubic root of 409425018 is about 742.5484438231.

The spelling of 409425018 in words is "four hundred nine million, four hundred twenty-five thousand, eighteen".