1540543132 has 12 divisors (see below), whose sum is σ = 2702039256. Its totient is φ = 768531920.

The previous prime is 1540543129. The next prime is 1540543139. The reversal of 1540543132 is 2313450451.

It is a self number, because there is not a number n which added to its sum of digits gives 1540543132.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1540543139) 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 3 ways as a sum of consecutive naturals, for example, 432919 + ... + 436462.

It is an arithmetic number, because the mean of its divisors is an integer number (225169938).

Almost surely, 2^1540543132 is an apocalyptic number.

It is an amenable number.

1540543132 is a deficient number, since it is larger than the sum of its proper divisors (1161496124).

1540543132 is a wasteful number, since it uses less digits than its factorization.

1540543132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 869828 (or 869826 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 1540543132 is about 39249.7532731099. The cubic root of 1540543132 is about 1154.9360938636.

Adding to 1540543132 its reverse (2313450451), we get a palindrome (3853993583).

The spelling of 1540543132 in words is "one billion, five hundred forty million, five hundred forty-three thousand, one hundred thirty-two".