1698798329 has 2 divisors, whose sum is σ = 1698798330. Its totient is φ = 1698798328.

The previous prime is 1698798323. The next prime is 1698798349. The reversal of 1698798329 is 9238978961.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1070794729 + 628003600 = 32723^2 + 25060^2 .

It is a cyclic number.

It is not a de Polignac number, because 1698798329 - 2⁴ = 1698798313 is a prime.

It is a super-2 number, since 2×1698798329² = 5771831525226384482, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1698798323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 849399164 + 849399165.

It is an arithmetic number, because the mean of its divisors is an integer number (849399165).

Almost surely, 2^1698798329 is an apocalyptic number.

It is an amenable number.

1698798329 is a deficient number, since it is larger than the sum of its proper divisors (1).

1698798329 is an equidigital number, since it uses as much as digits as its factorization.

1698798329 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11757312, while the sum is 62.

The square root of 1698798329 is about 41216.4812787312. The cubic root of 1698798329 is about 1193.2019150261.

The spelling of 1698798329 in words is "one billion, six hundred ninety-eight million, seven hundred ninety-eight thousand, three hundred twenty-nine".