1198523 has 2 divisors, whose sum is σ = 1198524. Its totient is φ = 1198522.

The previous prime is 1198513. The next prime is 1198537. The reversal of 1198523 is 3258911.

It is a weak prime.

It is an emirp because it is prime and its reverse (3258911) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1198523 - 2¹⁶ = 1132987 is a prime.

It is a plaindrome in base 16.

It is not a weakly prime, because it can be changed into another prime (1198513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 599261 + 599262.

It is an arithmetic number, because the mean of its divisors is an integer number (599262).

2^1198523 is an apocalyptic number.

1198523 is a deficient number, since it is larger than the sum of its proper divisors (1).

1198523 is an equidigital number, since it uses as much as digits as its factorization.

1198523 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2160, while the sum is 29.

The square root of 1198523 is about 1094.7707522582. The cubic root of 1198523 is about 106.2222404989. Note that the first 4 decimals are identical.

The spelling of 1198523 in words is "one million, one hundred ninety-eight thousand, five hundred twenty-three".