490497161 has 16 divisors (see below), whose sum is σ = 614221440. Its totient is φ = 380522880.

The previous prime is 490497113. The next prime is 490497167. The reversal of 490497161 is 161794094.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-490497161 is a prime.

It is not an unprimeable number, because it can be changed into a prime (490497167) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3725 + ... + 31541.

It is an arithmetic number, because the mean of its divisors is an integer number (38388840).

Almost surely, 2^490497161 is an apocalyptic number.

It is an amenable number.

490497161 is a deficient number, since it is larger than the sum of its proper divisors (123724279).

490497161 is a wasteful number, since it uses less digits than its factorization.

490497161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28064.

The product of its (nonzero) digits is 54432, while the sum is 41.

The square root of 490497161 is about 22147.1704964765. The cubic root of 490497161 is about 788.6400578626.

The spelling of 490497161 in words is "four hundred ninety million, four hundred ninety-seven thousand, one hundred sixty-one".