1542531568 has 40 divisors (see below), whose sum is σ = 3149686800. Its totient is φ = 729805824.

The previous prime is 1542531559. The next prime is 1542531569. The reversal of 1542531568 is 8651352451.

It is a self number, because there is not a number n which added to its sum of digits gives 1542531568.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1542531569) 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, 305448 + ... + 310456.

It is an arithmetic number, because the mean of its divisors is an integer number (78742170).

Almost surely, 2^1542531568 is an apocalyptic number.

It is an amenable number.

1542531568 is an abundant number, since it is smaller than the sum of its proper divisors (1607155232).

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

1542531568 is a wasteful number, since it uses less digits than its factorization.

1542531568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6049 (or 6043 counting only the distinct ones).

The product of its digits is 144000, while the sum is 40.

The square root of 1542531568 is about 39275.0756587432. The cubic root of 1542531568 is about 1155.4327864696.

The spelling of 1542531568 in words is "one billion, five hundred forty-two million, five hundred thirty-one thousand, five hundred sixty-eight".