1533921369 has 8 divisors (see below), whose sum is σ = 2045534112. Its totient is φ = 1022461440.

The previous prime is 1533921329. The next prime is 1533921377. The reversal of 1533921369 is 9631293351.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1533921369 - 2¹³ = 1533913177 is a prime.

It is a super-2 number, since 2×1533921369² = 4705829532549668322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1533921369.

It is not an unprimeable number, because it can be changed into a prime (1533921329) 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 7 ways as a sum of consecutive naturals, for example, 12264 + ... + 56729.

It is an arithmetic number, because the mean of its divisors is an integer number (255691764).

Almost surely, 2^1533921369 is an apocalyptic number.

It is an amenable number.

1533921369 is a deficient number, since it is larger than the sum of its proper divisors (511612743).

1533921369 is an equidigital number, since it uses as much as digits as its factorization.

1533921369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76407.

The product of its digits is 131220, while the sum is 42.

The square root of 1533921369 is about 39165.3082331800. The cubic root of 1533921369 is about 1153.2789517295.

The spelling of 1533921369 in words is "one billion, five hundred thirty-three million, nine hundred twenty-one thousand, three hundred sixty-nine".