538666869 has 16 divisors (see below), whose sum is σ = 776426112. Its totient is φ = 330220608.

The previous prime is 538666867. The next prime is 538666907. The reversal of 538666869 is 968666835.

538666869 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 538666869 - 2¹ = 538666867 is a prime.

It is a super-2 number, since 2×538666869² = 580323991516526322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (538666861) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16002 + ... + 36515.

It is an arithmetic number, because the mean of its divisors is an integer number (48526632).

Almost surely, 2^538666869 is an apocalyptic number.

It is an amenable number.

538666869 is a deficient number, since it is larger than the sum of its proper divisors (237759243).

538666869 is a wasteful number, since it uses less digits than its factorization.

538666869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52796.

The product of its digits is 11197440, while the sum is 57.

The square root of 538666869 is about 23209.1979396101. The cubic root of 538666869 is about 813.6546078964.

The spelling of 538666869 in words is "five hundred thirty-eight million, six hundred sixty-six thousand, eight hundred sixty-nine".