3862638438 has 8 divisors (see below), whose sum is σ = 7725276888. Its totient is φ = 1287546144.

The previous prime is 3862638431. The next prime is 3862638473. The reversal of 3862638438 is 8348362683.

It is a sphenic number, since it is the product of 3 distinct primes.

3862638438 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3862638431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 321886531 + ... + 321886542.

It is an arithmetic number, because the mean of its divisors is an integer number (965659611).

Almost surely, 2^3862638438 is an apocalyptic number.

3862638438 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

3862638438 is a wasteful number, since it uses less digits than its factorization.

3862638438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 643773078.

The product of its digits is 3981312, while the sum is 51.

The square root of 3862638438 is about 62150.1282219112. The cubic root of 3862638438 is about 1569.0183374716.

The spelling of 3862638438 in words is "three billion, eight hundred sixty-two million, six hundred thirty-eight thousand, four hundred thirty-eight".