1699360609 has 2 divisors, whose sum is σ = 1699360610. Its totient is φ = 1699360608.

The previous prime is 1699360583. The next prime is 1699360651. The reversal of 1699360609 is 9060639961.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1550154384 + 149206225 = 39372^2 + 12215^2 .

It is a cyclic number.

It is not a de Polignac number, because 1699360609 - 2⁵ = 1699360577 is a prime.

It is not a weakly prime, because it can be changed into another prime (1699367609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 849680304 + 849680305.

It is an arithmetic number, because the mean of its divisors is an integer number (849680305).

Almost surely, 2^1699360609 is an apocalyptic number.

It is an amenable number.

1699360609 is a deficient number, since it is larger than the sum of its proper divisors (1).

1699360609 is an equidigital number, since it uses as much as digits as its factorization.

1699360609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 472392, while the sum is 49.

The square root of 1699360609 is about 41223.3017721773. The cubic root of 1699360609 is about 1193.3335452406. Note that the first 3 decimals are identical.

The spelling of 1699360609 in words is "one billion, six hundred ninety-nine million, three hundred sixty thousand, six hundred nine".