490505813 has 8 divisors (see below), whose sum is σ = 560953728. Its totient is φ = 420151824.

The previous prime is 490505809. The next prime is 490505857. The reversal of 490505813 is 318505094.

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

It is a cyclic number.

It is not a de Polignac number, because 490505813 - 2² = 490505809 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (490505803) 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, 11906 + ... + 33507.

It is an arithmetic number, because the mean of its divisors is an integer number (70119216).

Almost surely, 2^490505813 is an apocalyptic number.

It is an amenable number.

490505813 is a deficient number, since it is larger than the sum of its proper divisors (70447915).

490505813 is a wasteful number, since it uses less digits than its factorization.

490505813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46963.

The product of its (nonzero) digits is 21600, while the sum is 35.

The square root of 490505813 is about 22147.3658253075. The cubic root of 490505813 is about 788.6446948406.

The spelling of 490505813 in words is "four hundred ninety million, five hundred five thousand, eight hundred thirteen".