4451356849 has 2 divisors, whose sum is σ = 4451356850. Its totient is φ = 4451356848.

The previous prime is 4451356829. The next prime is 4451356853. The reversal of 4451356849 is 9486531544.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3835572624 + 615784225 = 61932^2 + 24815^2 .

It is a cyclic number.

It is not a de Polignac number, because 4451356849 - 2⁹ = 4451356337 is a prime.

It is not a weakly prime, because it can be changed into another prime (4451356829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2225678424 + 2225678425.

It is an arithmetic number, because the mean of its divisors is an integer number (2225678425).

Almost surely, 2^4451356849 is an apocalyptic number.

It is an amenable number.

4451356849 is a deficient number, since it is larger than the sum of its proper divisors (1).

4451356849 is an equidigital number, since it uses as much as digits as its factorization.

4451356849 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2073600, while the sum is 49.

The square root of 4451356849 is about 66718.4895587423. The cubic root of 4451356849 is about 1644.9933141514.

The spelling of 4451356849 in words is "four billion, four hundred fifty-one million, three hundred fifty-six thousand, eight hundred forty-nine".