5638555469 has 2 divisors, whose sum is σ = 5638555470. Its totient is φ = 5638555468.

The previous prime is 5638555457. The next prime is 5638555499. The reversal of 5638555469 is 9645558365.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4964893444 + 673662025 = 70462^2 + 25955^2 .

It is a cyclic number.

It is not a de Polignac number, because 5638555469 - 2⁴ = 5638555453 is a prime.

It is a super-2 number, since 2×5638555469² = 63586615553979619922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5638555499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2819277734 + 2819277735.

It is an arithmetic number, because the mean of its divisors is an integer number (2819277735).

Almost surely, 2^5638555469 is an apocalyptic number.

It is an amenable number.

5638555469 is a deficient number, since it is larger than the sum of its proper divisors (1).

5638555469 is an equidigital number, since it uses as much as digits as its factorization.

5638555469 is an evil number, because the sum of its binary digits is even.

The product of its digits is 19440000, while the sum is 56.

The square root of 5638555469 is about 75090.3154141731. The cubic root of 5638555469 is about 1779.8741093687.

The spelling of 5638555469 in words is "five billion, six hundred thirty-eight million, five hundred fifty-five thousand, four hundred sixty-nine".