490423222081 has 8 divisors (see below), whose sum is σ = 546360088680. Its totient is φ = 437088070272.

The previous prime is 490423222063. The next prime is 490423222087. The reversal of 490423222081 is 180222324094.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 836135056 + 489587087025 = 28916^2 + 699705^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-490423222081 is a prime.

It is a super-2 number, since 2×490423222081² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 490423222081.

It is not an unprimeable number, because it can be changed into a prime (490423222087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 650428300 + ... + 650429053.

It is an arithmetic number, because the mean of its divisors is an integer number (68295011085).

Almost surely, 2^490423222081 is an apocalyptic number.

It is an amenable number.

490423222081 is a deficient number, since it is larger than the sum of its proper divisors (55936866599).

490423222081 is a wasteful number, since it uses less digits than its factorization.

490423222081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1300857395.

The product of its (nonzero) digits is 55296, while the sum is 37.

The spelling of 490423222081 in words is "four hundred ninety billion, four hundred twenty-three million, two hundred twenty-two thousand, eighty-one".