3866535438 has 16 divisors (see below), whose sum is σ = 7733681280. Its totient is φ = 1288743416.

The previous prime is 3866535427. The next prime is 3866535467. The reversal of 3866535438 is 8345356683.

It is a happy number.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 129781 + ... + 156767.

It is an arithmetic number, because the mean of its divisors is an integer number (483355080).

Almost surely, 2^3866535438 is an apocalyptic number.

3866535438 is an abundant number, since it is smaller than the sum of its proper divisors (3867145842).

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

3866535438 is a wasteful number, since it uses less digits than its factorization.

3866535438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50871.

The product of its digits is 6220800, while the sum is 51.

The square root of 3866535438 is about 62181.4718224006. The cubic root of 3866535438 is about 1569.5458188314.

The spelling of 3866535438 in words is "three billion, eight hundred sixty-six million, five hundred thirty-five thousand, four hundred thirty-eight".