1820008453 has 2 divisors, whose sum is σ = 1820008454. Its totient is φ = 1820008452.

The previous prime is 1820008451. The next prime is 1820008471. The reversal of 1820008453 is 3548000281.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1561988484 + 258019969 = 39522^2 + 16063^2 .

It is a cyclic number.

It is not a de Polignac number, because 1820008453 - 2¹ = 1820008451 is a prime.

Together with 1820008451, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1820008451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 910004226 + 910004227.

It is an arithmetic number, because the mean of its divisors is an integer number (910004227).

Almost surely, 2^1820008453 is an apocalyptic number.

It is an amenable number.

1820008453 is a deficient number, since it is larger than the sum of its proper divisors (1).

1820008453 is an equidigital number, since it uses as much as digits as its factorization.

1820008453 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7680, while the sum is 31.

The square root of 1820008453 is about 42661.5570859761. The cubic root of 1820008453 is about 1220.9310399479.

It can be divided in two parts, 182000845 and 3, that multiplied together give a triangular number (546002535 = T₃₃₀₄₅).

The spelling of 1820008453 in words is "one billion, eight hundred twenty million, eight thousand, four hundred fifty-three".