1533223116 has 36 divisors (see below), whose sum is σ = 3911878152. Its totient is φ = 506296704.

The previous prime is 1533223063. The next prime is 1533223117. The reversal of 1533223116 is 6113223351.

1533223116 is a `hidden beast` number, since 15 + 332 + 2 + 311 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a self number, because there is not a number n which added to its sum of digits gives 1533223116.

It is not an unprimeable number, because it can be changed into a prime (1533223117) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 195165 + ... + 202868.

It is an arithmetic number, because the mean of its divisors is an integer number (108663282).

It is a self-describing number.

Almost surely, 2^1533223116 is an apocalyptic number.

It is an amenable number.

1533223116 is an abundant number, since it is smaller than the sum of its proper divisors (2378655036).

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

1533223116 is a wasteful number, since it uses less digits than its factorization.

1533223116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 398150 (or 398145 counting only the distinct ones).

The product of its digits is 3240, while the sum is 27.

The square root of 1533223116 is about 39156.3930412391. The cubic root of 1533223116 is about 1153.1039313047.

Adding to 1533223116 its reverse (6113223351), we get a palindrome (7646446467).

The spelling of 1533223116 in words is "one billion, five hundred thirty-three million, two hundred twenty-three thousand, one hundred sixteen".