490408161 has 8 divisors (see below), whose sum is σ = 654503904. Its totient is φ = 326625600.

The previous prime is 490408159. The next prime is 490408181. The reversal of 490408161 is 161804094.

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

It is not a de Polignac number, because 490408161 - 2¹ = 490408159 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (490408141) 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, 74616 + ... + 80921.

It is an arithmetic number, because the mean of its divisors is an integer number (81812988).

Almost surely, 2^490408161 is an apocalyptic number.

It is an amenable number.

490408161 is a deficient number, since it is larger than the sum of its proper divisors (164095743).

490408161 is a wasteful number, since it uses less digits than its factorization.

490408161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156591.

The product of its (nonzero) digits is 6912, while the sum is 33.

The square root of 490408161 is about 22145.1611193055. The cubic root of 490408161 is about 788.5923557783.

The spelling of 490408161 in words is "four hundred ninety million, four hundred eight thousand, one hundred sixty-one".