1542434819 has 2 divisors, whose sum is σ = 1542434820. Its totient is φ = 1542434818.

The previous prime is 1542434807. The next prime is 1542434833. The reversal of 1542434819 is 9184342451.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1542434819 - 2⁸ = 1542434563 is a prime.

It is a super-2 number, since 2×1542434819² = 4758210341727125522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1542434849) 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 as a sum of consecutive naturals, namely, 771217409 + 771217410.

It is an arithmetic number, because the mean of its divisors is an integer number (771217410).

Almost surely, 2^1542434819 is an apocalyptic number.

1542434819 is a deficient number, since it is larger than the sum of its proper divisors (1).

1542434819 is an equidigital number, since it uses as much as digits as its factorization.

1542434819 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 138240, while the sum is 41.

The square root of 1542434819 is about 39273.8439549785. The cubic root of 1542434819 is about 1155.4086293618.

The spelling of 1542434819 in words is "one billion, five hundred forty-two million, four hundred thirty-four thousand, eight hundred nineteen".