1318216453 has 2 divisors, whose sum is σ = 1318216454. Its totient is φ = 1318216452.

The previous prime is 1318216433. The next prime is 1318216463. The reversal of 1318216453 is 3546128131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1304798884 + 13417569 = 36122^2 + 3663^2 .

It is a cyclic number.

It is not a de Polignac number, because 1318216453 - 2¹⁷ = 1318085381 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1318216423) 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, 659108226 + 659108227.

It is an arithmetic number, because the mean of its divisors is an integer number (659108227).

Almost surely, 2^1318216453 is an apocalyptic number.

It is an amenable number.

1318216453 is a deficient number, since it is larger than the sum of its proper divisors (1).

1318216453 is an equidigital number, since it uses as much as digits as its factorization.

1318216453 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17280, while the sum is 34.

The square root of 1318216453 is about 36307.2506945927. The cubic root of 1318216453 is about 1096.4670266740.

The spelling of 1318216453 in words is "one billion, three hundred eighteen million, two hundred sixteen thousand, four hundred fifty-three".