1609042427 has 2 divisors, whose sum is σ = 1609042428. Its totient is φ = 1609042426.

The previous prime is 1609042381. The next prime is 1609042433. The reversal of 1609042427 is 7242409061.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1609042427 - 2⁶ = 1609042363 is a prime.

It is not a weakly prime, because it can be changed into another prime (1609042627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 804521213 + 804521214.

It is an arithmetic number, because the mean of its divisors is an integer number (804521214).

Almost surely, 2^1609042427 is an apocalyptic number.

1609042427 is a deficient number, since it is larger than the sum of its proper divisors (1).

1609042427 is an equidigital number, since it uses as much as digits as its factorization.

1609042427 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 1609042427 is about 40112.8710889659. The cubic root of 1609042427 is about 1171.8063089213.

The spelling of 1609042427 in words is "one billion, six hundred nine million, forty-two thousand, four hundred twenty-seven".