1533213318 has 32 divisors (see below), whose sum is σ = 3774064896. Its totient is φ = 404363808.

The previous prime is 1533213317. The next prime is 1533213347. The reversal of 1533213318 is 8133123351.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1533213313) 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 in 15 ways as a sum of consecutive naturals, for example, 1403496 + ... + 1404587.

It is an arithmetic number, because the mean of its divisors is an integer number (117939528).

Almost surely, 2^1533213318 is an apocalyptic number.

1533213318 is an abundant number, since it is smaller than the sum of its proper divisors (2240851578).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1533213318 is a wasteful number, since it uses less digits than its factorization.

1533213318 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2808108.

The product of its digits is 6480, while the sum is 30.

The square root of 1533213318 is about 39156.2679273702. The cubic root of 1533213318 is about 1153.1014750116.

Adding to 1533213318 its reverse (8133123351), we get a palindrome (9666336669).

The spelling of 1533213318 in words is "one billion, five hundred thirty-three million, two hundred thirteen thousand, three hundred eighteen".