4490561891 has 2 divisors, whose sum is σ = 4490561892. Its totient is φ = 4490561890.

The previous prime is 4490561879. The next prime is 4490561903. The reversal of 4490561891 is 1981650944.

It is a balanced prime because it is at equal distance from previous prime (4490561879) and next prime (4490561903).

It is a cyclic number.

It is not a de Polignac number, because 4490561891 - 2⁶ = 4490561827 is a prime.

It is not a weakly prime, because it can be changed into another prime (4490561861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2245280945 + 2245280946.

It is an arithmetic number, because the mean of its divisors is an integer number (2245280946).

Almost surely, 2^4490561891 is an apocalyptic number.

4490561891 is a deficient number, since it is larger than the sum of its proper divisors (1).

4490561891 is an equidigital number, since it uses as much as digits as its factorization.

4490561891 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 311040, while the sum is 47.

The square root of 4490561891 is about 67011.6548892803. The cubic root of 4490561891 is about 1649.8085962243.

The spelling of 4490561891 in words is "four billion, four hundred ninety million, five hundred sixty-one thousand, eight hundred ninety-one".