5644398258 has 24 divisors (see below), whose sum is σ = 12231035388. Its totient is φ = 1881234432.

The previous prime is 5644398239. The next prime is 5644398313. The reversal of 5644398258 is 8528934465.

It can be written as a sum of positive squares in 2 ways, for example, as 4928461209 + 715937049 = 70203^2 + 26757^2 .

It is a super-3 number, since 3×5644398258³ (a number of 30 digits) contains 333 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 195610 + ... + 222602.

Almost surely, 2^5644398258 is an apocalyptic number.

5644398258 is an abundant number, since it is smaller than the sum of its proper divisors (6586637130).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5644398258 is a wasteful number, since it uses less digits than its factorization.

5644398258 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38618 (or 38615 counting only the distinct ones).

The product of its digits is 8294400, while the sum is 54.

The square root of 5644398258 is about 75129.2104177862. The cubic root of 5644398258 is about 1780.4886780560.

The spelling of 5644398258 in words is "five billion, six hundred forty-four million, three hundred ninety-eight thousand, two hundred fifty-eight".