1543454532 has 18 divisors (see below), whose sum is σ = 3901510158. Its totient is φ = 514484832.

The previous prime is 1543454527. The next prime is 1543454533. The reversal of 1543454532 is 2354543451.

1543454532 is a `hidden beast` number, since 1 + 54 + 34 + 545 + 32 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1151652096 + 391802436 = 33936^2 + 19794^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 42873737 = 1543454532 / (1 + 5 + 4 + 3 + 4 + 5 + 4 + 5 + 3 + 2).

It is not an unprimeable number, because it can be changed into a prime (1543454533) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 21436833 + ... + 21436904.

Almost surely, 2^1543454532 is an apocalyptic number.

1543454532 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1543454532 is an abundant number, since it is smaller than the sum of its proper divisors (2358055626).

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

1543454532 is a wasteful number, since it uses less digits than its factorization.

1543454532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42873747 (or 42873742 counting only the distinct ones).

The product of its digits is 144000, while the sum is 36.

The square root of 1543454532 is about 39286.8238980959. The cubic root of 1543454532 is about 1155.6631891538.

Adding to 1543454532 its reverse (2354543451), we get a palindrome (3897997983).

The spelling of 1543454532 in words is "one billion, five hundred forty-three million, four hundred fifty-four thousand, five hundred thirty-two".