490957948909 has 2 divisors, whose sum is σ = 490957948910. Its totient is φ = 490957948908.

The previous prime is 490957948889. The next prime is 490957948951. The reversal of 490957948909 is 909849759094.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 490354264009 + 603684900 = 700253^2 + 24570^2 .

It is a cyclic number.

It is not a de Polignac number, because 490957948909 - 2¹³ = 490957940717 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (490957948979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 245478974454 + 245478974455.

It is an arithmetic number, because the mean of its divisors is an integer number (245478974455).

Almost surely, 2^490957948909 is an apocalyptic number.

It is an amenable number.

490957948909 is a deficient number, since it is larger than the sum of its proper divisors (1).

490957948909 is an equidigital number, since it uses as much as digits as its factorization.

490957948909 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 264539520, while the sum is 73.

The spelling of 490957948909 in words is "four hundred ninety billion, nine hundred fifty-seven million, nine hundred forty-eight thousand, nine hundred nine".