1648447453 has 2 divisors, whose sum is σ = 1648447454. Its totient is φ = 1648447452.

The previous prime is 1648447397. The next prime is 1648447459. The reversal of 1648447453 is 3547448461.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1404525529 + 243921924 = 37477^2 + 15618^2 .

It is a cyclic number.

It is not a de Polignac number, because 1648447453 - 2²¹ = 1646350301 is a prime.

It is a super-4 number, since 4×1648447453⁴ (a number of 38 digits) contains 4444 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1648447459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 824223726 + 824223727.

It is an arithmetic number, because the mean of its divisors is an integer number (824223727).

Almost surely, 2^1648447453 is an apocalyptic number.

It is an amenable number.

1648447453 is a deficient number, since it is larger than the sum of its proper divisors (1).

1648447453 is an equidigital number, since it uses as much as digits as its factorization.

1648447453 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1290240, while the sum is 46.

The square root of 1648447453 is about 40601.0769931045. The cubic root of 1648447453 is about 1181.2950095930.

The spelling of 1648447453 in words is "one billion, six hundred forty-eight million, four hundred forty-seven thousand, four hundred fifty-three".