2016239609 has 2 divisors, whose sum is σ = 2016239610. Its totient is φ = 2016239608.

The previous prime is 2016239573. The next prime is 2016239689. The reversal of 2016239609 is 9069326102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1308413584 + 707826025 = 36172^2 + 26605^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2016239609 is a prime.

It is not a weakly prime, because it can be changed into another prime (2016239689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1008119804 + 1008119805.

It is an arithmetic number, because the mean of its divisors is an integer number (1008119805).

Almost surely, 2^2016239609 is an apocalyptic number.

It is an amenable number.

2016239609 is a deficient number, since it is larger than the sum of its proper divisors (1).

2016239609 is an equidigital number, since it uses as much as digits as its factorization.

2016239609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34992, while the sum is 38.

The square root of 2016239609 is about 44902.5568202970. The cubic root of 2016239609 is about 1263.3219657168.

The spelling of 2016239609 in words is "two billion, sixteen million, two hundred thirty-nine thousand, six hundred nine".