490618961 has 8 divisors (see below), whose sum is σ = 563055360. Its totient is φ = 418769568.

The previous prime is 490618951. The next prime is 490618967. The reversal of 490618961 is 169816094.

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

It is not a de Polignac number, because 490618961 - 2¹⁸ = 490356817 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (490618967) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 144956 + ... + 148301.

It is an arithmetic number, because the mean of its divisors is an integer number (70381920).

Almost surely, 2^490618961 is an apocalyptic number.

It is an amenable number.

490618961 is a deficient number, since it is larger than the sum of its proper divisors (72436399).

490618961 is a wasteful number, since it uses less digits than its factorization.

490618961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 293503.

The product of its (nonzero) digits is 93312, while the sum is 44.

The square root of 490618961 is about 22149.9201127228. The cubic root of 490618961 is about 788.7053306898.

The spelling of 490618961 in words is "four hundred ninety million, six hundred eighteen thousand, nine hundred sixty-one".