5638698529 has 2 divisors, whose sum is σ = 5638698530. Its totient is φ = 5638698528.

The previous prime is 5638698521. The next prime is 5638698557. The reversal of 5638698529 is 9258968365.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5598032400 + 40666129 = 74820^2 + 6377^2 .

It is a cyclic number.

It is not a de Polignac number, because 5638698529 - 2³ = 5638698521 is a prime.

It is a super-3 number, since 3×5638698529³ (a number of 30 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (5638698521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2819349264 + 2819349265.

It is an arithmetic number, because the mean of its divisors is an integer number (2819349265).

Almost surely, 2^5638698529 is an apocalyptic number.

It is an amenable number.

5638698529 is a deficient number, since it is larger than the sum of its proper divisors (1).

5638698529 is an equidigital number, since it uses as much as digits as its factorization.

5638698529 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27993600, while the sum is 61.

The square root of 5638698529 is about 75091.2679943547. The cubic root of 5638698529 is about 1779.8891620796.

The spelling of 5638698529 in words is "five billion, six hundred thirty-eight million, six hundred ninety-eight thousand, five hundred twenty-nine".