1698349 has 2 divisors, whose sum is σ = 1698350. Its totient is φ = 1698348.

The previous prime is 1698313. The next prime is 1698377. The reversal of 1698349 is 9438961.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 855625 + 842724 = 925^2 + 918^2 .

It is a cyclic number.

It is not a de Polignac number, because 1698349 - 2¹⁵ = 1665581 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1698379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 849174 + 849175.

It is an arithmetic number, because the mean of its divisors is an integer number (849175).

2^1698349 is an apocalyptic number.

It is an amenable number.

1698349 is a deficient number, since it is larger than the sum of its proper divisors (1).

1698349 is an equidigital number, since it uses as much as digits as its factorization.

1698349 is an evil number, because the sum of its binary digits is even.

The product of its digits is 46656, while the sum is 40.

The square root of 1698349 is about 1303.2071976474. The cubic root of 1698349 is about 119.3096705854.

The spelling of 1698349 in words is "one million, six hundred ninety-eight thousand, three hundred forty-nine".