1536543252 has 144 divisors (see below), whose sum is σ = 4132448320. Its totient is φ = 480743424.

The previous prime is 1536543247. The next prime is 1536543263. The reversal of 1536543252 is 2523456351.

1536543252 is a `hidden beast` number, since 1 + 5 + 365 + 43 + 252 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7961268 + ... + 7961460.

Almost surely, 2^1536543252 is an apocalyptic number.

1536543252 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1536543252, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2066224160).

1536543252 is an abundant number, since it is smaller than the sum of its proper divisors (2595905068).

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

1536543252 is a wasteful number, since it uses less digits than its factorization.

1536543252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 422 (or 417 counting only the distinct ones).

The product of its digits is 108000, while the sum is 36.

The square root of 1536543252 is about 39198.7659499633. The cubic root of 1536543252 is about 1153.9356653799.

The spelling of 1536543252 in words is "one billion, five hundred thirty-six million, five hundred forty-three thousand, two hundred fifty-two".