1533221830 has 16 divisors (see below), whose sum is σ = 3154056480. Its totient is φ = 525676032.

The previous prime is 1533221801. The next prime is 1533221831. The reversal of 1533221830 is 381223351.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1533221831) 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, 10951515 + ... + 10951654.

It is an arithmetic number, because the mean of its divisors is an integer number (197128530).

Almost surely, 2^1533221830 is an apocalyptic number.

1533221830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1533221830 is an abundant number, since it is smaller than the sum of its proper divisors (1620834650).

1533221830 is a wasteful number, since it uses less digits than its factorization.

1533221830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21903183.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 1533221830 is about 39156.3766199070. The cubic root of 1533221830 is about 1153.1036089137.

The spelling of 1533221830 in words is "one billion, five hundred thirty-three million, two hundred twenty-one thousand, eight hundred thirty".