1698968629 has 2 divisors, whose sum is σ = 1698968630. Its totient is φ = 1698968628.

The previous prime is 1698968617. The next prime is 1698968651. The reversal of 1698968629 is 9268698961.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1439823025 + 259145604 = 37945^2 + 16098^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1698968629 is a prime.

It is a super-2 number, since 2×1698968629² = 5772988804652279282, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1698968659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 849484314 + 849484315.

It is an arithmetic number, because the mean of its divisors is an integer number (849484315).

Almost surely, 2^1698968629 is an apocalyptic number.

It is an amenable number.

1698968629 is a deficient number, since it is larger than the sum of its proper divisors (1).

1698968629 is an equidigital number, since it uses as much as digits as its factorization.

1698968629 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20155392, while the sum is 64.

The square root of 1698968629 is about 41218.5471480983. The cubic root of 1698968629 is about 1193.2417854633.

The spelling of 1698968629 in words is "one billion, six hundred ninety-eight million, nine hundred sixty-eight thousand, six hundred twenty-nine".