490842618 has 64 divisors (see below), whose sum is σ = 1187466240. Its totient is φ = 132129792.

The previous prime is 490842613. The next prime is 490842631. The reversal of 490842618 is 816248094.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a self number, because there is not a number n which added to its sum of digits gives 490842618.

It is not an unprimeable number, because it can be changed into a prime (490842613) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 152421 + ... + 155607.

It is an arithmetic number, because the mean of its divisors is an integer number (18554160).

Almost surely, 2^490842618 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 490842618, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (593733120).

490842618 is an abundant number, since it is smaller than the sum of its proper divisors (696623622).

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

490842618 is a wasteful number, since it uses less digits than its factorization.

490842618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3411.

The product of its (nonzero) digits is 110592, while the sum is 42.

The square root of 490842618 is about 22154.9682464227. The cubic root of 490842618 is about 788.8251607304.

The spelling of 490842618 in words is "four hundred ninety million, eight hundred forty-two thousand, six hundred eighteen".