1543542068 has 12 divisors (see below), whose sum is σ = 2701977600. Its totient is φ = 771548472.

The previous prime is 1543542043. The next prime is 1543542079. The reversal of 1543542068 is 8602453451.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39518 + ... + 68181.

It is an arithmetic number, because the mean of its divisors is an integer number (225164800).

Almost surely, 2^1543542068 is an apocalyptic number.

It is an amenable number.

1543542068 is a deficient number, since it is larger than the sum of its proper divisors (1158435532).

1543542068 is a wasteful number, since it uses less digits than its factorization.

1543542068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111286 (or 111284 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 38.

The square root of 1543542068 is about 39287.9379453796. The cubic root of 1543542068 is about 1155.6850362978.

The spelling of 1543542068 in words is "one billion, five hundred forty-three million, five hundred forty-two thousand, sixty-eight".