481905809 has 8 divisors (see below), whose sum is σ = 600817728. Its totient is φ = 375510960.

The previous prime is 481905799. The next prime is 481905811. The reversal of 481905809 is 908509184.

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

It is not a de Polignac number, because 481905809 - 2⁴ = 481905793 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 481905809.

It is not an unprimeable number, because it can be changed into a prime (481905829) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3129182 + ... + 3129335.

It is an arithmetic number, because the mean of its divisors is an integer number (75102216).

Almost surely, 2^481905809 is an apocalyptic number.

It is an amenable number.

481905809 is a deficient number, since it is larger than the sum of its proper divisors (118911919).

481905809 is a wasteful number, since it uses less digits than its factorization.

481905809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6258535.

The product of its (nonzero) digits is 103680, while the sum is 44.

The square root of 481905809 is about 21952.3531540471. The cubic root of 481905809 is about 784.0084084071.

The spelling of 481905809 in words is "four hundred eighty-one million, nine hundred five thousand, eight hundred nine".