1698253061 has 2 divisors, whose sum is σ = 1698253062. Its totient is φ = 1698253060.

The previous prime is 1698253049. The next prime is 1698253069. The reversal of 1698253061 is 1603528961.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1499160961 + 199092100 = 38719^2 + 14110^2 .

It is a cyclic number.

It is not a de Polignac number, because 1698253061 - 2²² = 1694058757 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1698253069) 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, 849126530 + 849126531.

It is an arithmetic number, because the mean of its divisors is an integer number (849126531).

Almost surely, 2^1698253061 is an apocalyptic number.

It is an amenable number.

1698253061 is a deficient number, since it is larger than the sum of its proper divisors (1).

1698253061 is an equidigital number, since it uses as much as digits as its factorization.

1698253061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 77760, while the sum is 41.

The square root of 1698253061 is about 41209.8660638445. The cubic root of 1698253061 is about 1193.0742395917.

The spelling of 1698253061 in words is "one billion, six hundred ninety-eight million, two hundred fifty-three thousand, sixty-one".