4494555641 has 2 divisors, whose sum is σ = 4494555642. Its totient is φ = 4494555640.

The previous prime is 4494555623. The next prime is 4494555673. The reversal of 4494555641 is 1465554944.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3290743225 + 1203812416 = 57365^2 + 34696^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4494555641 is a prime.

It is not a weakly prime, because it can be changed into another prime (4494555601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2247277820 + 2247277821.

It is an arithmetic number, because the mean of its divisors is an integer number (2247277821).

Almost surely, 2^4494555641 is an apocalyptic number.

It is an amenable number.

4494555641 is a deficient number, since it is larger than the sum of its proper divisors (1).

4494555641 is an equidigital number, since it uses as much as digits as its factorization.

4494555641 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1728000, while the sum is 47.

The square root of 4494555641 is about 67041.4471875421. The cubic root of 4494555641 is about 1650.2975454832.

The spelling of 4494555641 in words is "four billion, four hundred ninety-four million, five hundred fifty-five thousand, six hundred forty-one".