490740618 has 16 divisors (see below), whose sum is σ = 991200096. Its totient is φ = 161960400.

The previous prime is 490740617. The next prime is 490740619. The reversal of 490740618 is 816047094.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (490740617) and next prime (490740619).

It is not an unprimeable number, because it can be changed into a prime (490740611) 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, 404296 + ... + 405507.

It is an arithmetic number, because the mean of its divisors is an integer number (61950006).

Almost surely, 2^490740618 is an apocalyptic number.

490740618 is an abundant number, since it is smaller than the sum of its proper divisors (500459478).

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

490740618 is a wasteful number, since it uses less digits than its factorization.

490740618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 809909.

The product of its (nonzero) digits is 48384, while the sum is 39.

The square root of 490740618 is about 22152.6661600810. Note that the first 3 decimals coincide. The cubic root of 490740618 is about 788.7705160999.

The spelling of 490740618 in words is "four hundred ninety million, seven hundred forty thousand, six hundred eighteen".