1698968699 has 2 divisors, whose sum is σ = 1698968700. Its totient is φ = 1698968698.

The previous prime is 1698968659. The next prime is 1698968717. The reversal of 1698968699 is 9968698961.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1698968699 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (1698968629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 849484349 + 849484350.

It is an arithmetic number, because the mean of its divisors is an integer number (849484350).

Almost surely, 2^1698968699 is an apocalyptic number.

1698968699 is a deficient number, since it is larger than the sum of its proper divisors (1).

1698968699 is an equidigital number, since it uses as much as digits as its factorization.

1698968699 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 90699264, while the sum is 71.

The square root of 1698968699 is about 41218.5479972306. The cubic root of 1698968699 is about 1193.2418018511.

The spelling of 1698968699 in words is "one billion, six hundred ninety-eight million, nine hundred sixty-eight thousand, six hundred ninety-nine".