1698263053 has 2 divisors, whose sum is σ = 1698263054. Its totient is φ = 1698263052.

The previous prime is 1698263051. The next prime is 1698263057. The reversal of 1698263053 is 3503628961.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1437698889 + 260564164 = 37917^2 + 16142^2 .

It is a cyclic number.

It is not a de Polignac number, because 1698263053 - 2¹ = 1698263051 is a prime.

Together with 1698263051, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1698263051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 849131526 + 849131527.

It is an arithmetic number, because the mean of its divisors is an integer number (849131527).

Almost surely, 2^1698263053 is an apocalyptic number.

It is an amenable number.

1698263053 is a deficient number, since it is larger than the sum of its proper divisors (1).

1698263053 is an equidigital number, since it uses as much as digits as its factorization.

1698263053 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 233280, while the sum is 43.

The square root of 1698263053 is about 41209.9872967707. The cubic root of 1698263053 is about 1193.0765794814.

The spelling of 1698263053 in words is "one billion, six hundred ninety-eight million, two hundred sixty-three thousand, fifty-three".