490518173 has 2 divisors, whose sum is σ = 490518174. Its totient is φ = 490518172.

The previous prime is 490518169. The next prime is 490518191. The reversal of 490518173 is 371815094.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 441546169 + 48972004 = 21013^2 + 6998^2 .

It is a cyclic number.

It is not a de Polignac number, because 490518173 - 2² = 490518169 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (490518143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 245259086 + 245259087.

It is an arithmetic number, because the mean of its divisors is an integer number (245259087).

Almost surely, 2^490518173 is an apocalyptic number.

It is an amenable number.

490518173 is a deficient number, since it is larger than the sum of its proper divisors (1).

490518173 is an equidigital number, since it uses as much as digits as its factorization.

490518173 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30240, while the sum is 38.

The square root of 490518173 is about 22147.6448635064. The cubic root of 490518173 is about 788.6513190003.

The spelling of 490518173 in words is "four hundred ninety million, five hundred eighteen thousand, one hundred seventy-three".