1609632047 has 2 divisors, whose sum is σ = 1609632048. Its totient is φ = 1609632046.

The previous prime is 1609632019. The next prime is 1609632049. The reversal of 1609632047 is 7402369061.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1609632047 is a prime.

Together with 1609632049, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1609632047.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1609632049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 804816023 + 804816024.

It is an arithmetic number, because the mean of its divisors is an integer number (804816024).

Almost surely, 2^1609632047 is an apocalyptic number.

1609632047 is a deficient number, since it is larger than the sum of its proper divisors (1).

1609632047 is an equidigital number, since it uses as much as digits as its factorization.

1609632047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54432, while the sum is 38.

The square root of 1609632047 is about 40120.2199271141. The cubic root of 1609632047 is about 1171.9494242814.

The spelling of 1609632047 in words is "one billion, six hundred nine million, six hundred thirty-two thousand, forty-seven".