4490561923 has 2 divisors, whose sum is σ = 4490561924. Its totient is φ = 4490561922.

The previous prime is 4490561903. The next prime is 4490561981. The reversal of 4490561923 is 3291650944.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4490561923 - 2⁵ = 4490561891 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 4490561923.

It is not a weakly prime, because it can be changed into another prime (4490561903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2245280961 + 2245280962.

It is an arithmetic number, because the mean of its divisors is an integer number (2245280962).

Almost surely, 2^4490561923 is an apocalyptic number.

4490561923 is a deficient number, since it is larger than the sum of its proper divisors (1).

4490561923 is an equidigital number, since it uses as much as digits as its factorization.

4490561923 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 233280, while the sum is 43.

The square root of 4490561923 is about 67011.6551280447. The cubic root of 4490561923 is about 1649.8086001432.

The spelling of 4490561923 in words is "four billion, four hundred ninety million, five hundred sixty-one thousand, nine hundred twenty-three".