1542438899 has 2 divisors, whose sum is σ = 1542438900. Its totient is φ = 1542438898.

The previous prime is 1542438847. The next prime is 1542438923. The reversal of 1542438899 is 9988342451.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1542438899 - 2⁸ = 1542438643 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1542438899.

It is not a weakly prime, because it can be changed into another prime (1542438839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 771219449 + 771219450.

It is an arithmetic number, because the mean of its divisors is an integer number (771219450).

Almost surely, 2^1542438899 is an apocalyptic number.

1542438899 is a deficient number, since it is larger than the sum of its proper divisors (1).

1542438899 is an equidigital number, since it uses as much as digits as its factorization.

1542438899 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2488320, while the sum is 53.

The square root of 1542438899 is about 39273.8958979116. The cubic root of 1542438899 is about 1155.4096481111.

The spelling of 1542438899 in words is "one billion, five hundred forty-two million, four hundred thirty-eight thousand, eight hundred ninety-nine".