5538685693 has 2 divisors, whose sum is σ = 5538685694. Its totient is φ = 5538685692.

The previous prime is 5538685681. The next prime is 5538685703. The reversal of 5538685693 is 3965868355.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4412546329 + 1126139364 = 66427^2 + 33558^2 .

It is a cyclic number.

It is not a de Polignac number, because 5538685693 - 2⁵ = 5538685661 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5538685673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2769342846 + 2769342847.

It is an arithmetic number, because the mean of its divisors is an integer number (2769342847).

Almost surely, 2^5538685693 is an apocalyptic number.

It is an amenable number.

5538685693 is a deficient number, since it is larger than the sum of its proper divisors (1).

5538685693 is an equidigital number, since it uses as much as digits as its factorization.

5538685693 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23328000, while the sum is 58.

The square root of 5538685693 is about 74422.3467313414. The cubic root of 5538685693 is about 1769.3031072900.

The spelling of 5538685693 in words is "five billion, five hundred thirty-eight million, six hundred eighty-five thousand, six hundred ninety-three".