4020454453 has 2 divisors, whose sum is σ = 4020454454. Its totient is φ = 4020454452.

The previous prime is 4020454393. The next prime is 4020454531. The reversal of 4020454453 is 3544540204.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2631997809 + 1388456644 = 51303^2 + 37262^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4020454453 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4020457453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2010227226 + 2010227227.

It is an arithmetic number, because the mean of its divisors is an integer number (2010227227).

Almost surely, 2^4020454453 is an apocalyptic number.

It is an amenable number.

4020454453 is a deficient number, since it is larger than the sum of its proper divisors (1).

4020454453 is an equidigital number, since it uses as much as digits as its factorization.

4020454453 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 38400, while the sum is 31.

The square root of 4020454453 is about 63407.0536533594. The cubic root of 4020454453 is about 1590.1022379310.

Adding to 4020454453 its reverse (3544540204), we get a palindrome (7564994657).

The spelling of 4020454453 in words is "four billion, twenty million, four hundred fifty-four thousand, four hundred fifty-three".