490347618 has 32 divisors (see below), whose sum is σ = 1013886720. Its totient is φ = 157991040.

The previous prime is 490347617. The next prime is 490347629. The reversal of 490347618 is 816743094.

It is an alternating number because its digits alternate between even and odd.

It is a self number, because there is not a number n which added to its sum of digits gives 490347618.

It is not an unprimeable number, because it can be changed into a prime (490347617) 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, 17671 + ... + 35957.

It is an arithmetic number, because the mean of its divisors is an integer number (31683960).

Almost surely, 2^490347618 is an apocalyptic number.

490347618 is an abundant number, since it is smaller than the sum of its proper divisors (523539102).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

490347618 is a wasteful number, since it uses less digits than its factorization.

490347618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18442.

The product of its (nonzero) digits is 145152, while the sum is 42.

The square root of 490347618 is about 22143.7941193464. The cubic root of 490347618 is about 788.5599027350.

The spelling of 490347618 in words is "four hundred ninety million, three hundred forty-seven thousand, six hundred eighteen".