1542438805 has 16 divisors (see below), whose sum is σ = 1918350720. Its totient is φ = 1189161792.

The previous prime is 1542438787. The next prime is 1542438839. The reversal of 1542438805 is 5088342451.

It is a cyclic number.

It is not a de Polignac number, because 1542438805 - 2¹¹ = 1542436757 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 69592 + ... + 89038.

It is an arithmetic number, because the mean of its divisors is an integer number (119896920).

Almost surely, 2^1542438805 is an apocalyptic number.

It is an amenable number.

1542438805 is a deficient number, since it is larger than the sum of its proper divisors (375911915).

1542438805 is a wasteful number, since it uses less digits than its factorization.

1542438805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20028.

The product of its (nonzero) digits is 153600, while the sum is 40.

The square root of 1542438805 is about 39273.8947011880. The cubic root of 1542438805 is about 1155.4096246399.

The spelling of 1542438805 in words is "one billion, five hundred forty-two million, four hundred thirty-eight thousand, eight hundred five".