1021384453 has 2 divisors, whose sum is σ = 1021384454. Its totient is φ = 1021384452.

The previous prime is 1021384451. The next prime is 1021384477. The reversal of 1021384453 is 3544831201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 623900484 + 397483969 = 24978^2 + 19937^2 .

It is an emirp because it is prime and its reverse (3544831201) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1021384453 - 2¹ = 1021384451 is a prime.

Together with 1021384451, 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 (1021384451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510692226 + 510692227.

It is an arithmetic number, because the mean of its divisors is an integer number (510692227).

Almost surely, 2^1021384453 is an apocalyptic number.

It is an amenable number.

1021384453 is a deficient number, since it is larger than the sum of its proper divisors (1).

1021384453 is an equidigital number, since it uses as much as digits as its factorization.

1021384453 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 1021384453 is about 31959.1059480706. The cubic root of 1021384453 is about 1007.0779356323.

The spelling of 1021384453 in words is "one billion, twenty-one million, three hundred eighty-four thousand, four hundred fifty-three".