490779018 has 24 divisors (see below), whose sum is σ = 1125905508. Its totient is φ = 153969792.

The previous prime is 490779013. The next prime is 490779043. The reversal of 490779018 is 810977094.

490779018 is a `hidden beast` number, since 490 + 77 + 90 + 1 + 8 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 462551049 + 28227969 = 21507^2 + 5313^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (490779013) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 801621 + ... + 802232.

Almost surely, 2^490779018 is an apocalyptic number.

490779018 is an abundant number, since it is smaller than the sum of its proper divisors (635126490).

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

490779018 is a wasteful number, since it uses less digits than its factorization.

490779018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1603878 (or 1603875 counting only the distinct ones).

The product of its (nonzero) digits is 127008, while the sum is 45.

The square root of 490779018 is about 22153.5328559578. The cubic root of 490779018 is about 788.7910890847.

The spelling of 490779018 in words is "four hundred ninety million, seven hundred seventy-nine thousand, eighteen".