3688906438 has 16 divisors (see below), whose sum is σ = 6494755104. Its totient is φ = 1538231040.

The previous prime is 3688906393. The next prime is 3688906453. The reversal of 3688906438 is 8346098863.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3560203 + ... + 3561238.

It is an arithmetic number, because the mean of its divisors is an integer number (405922194).

Almost surely, 2^3688906438 is an apocalyptic number.

3688906438 is a deficient number, since it is larger than the sum of its proper divisors (2805848666).

3688906438 is a wasteful number, since it uses less digits than its factorization.

3688906438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7121487.

The product of its (nonzero) digits is 5971968, while the sum is 55.

The square root of 3688906438 is about 60736.3683306798. The cubic root of 3688906438 is about 1545.1330430077.

The spelling of 3688906438 in words is "three billion, six hundred eighty-eight million, nine hundred six thousand, four hundred thirty-eight".