3731638 has 16 divisors (see below), whose sum is σ = 5929920. Its totient is φ = 1756296.

The previous prime is 3731627. The next prime is 3731683. The reversal of 3731638 is 8361373.

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, 10581 + ... + 10927.

It is an arithmetic number, because the mean of its divisors is an integer number (370620).

Almost surely, 2^3731638 is an apocalyptic number.

3731638 is a gapful number since it is divisible by the number (38) formed by its first and last digit.

3731638 is a deficient number, since it is larger than the sum of its proper divisors (2198282).

3731638 is a wasteful number, since it uses less digits than its factorization.

3731638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 651.

The product of its digits is 9072, while the sum is 31.

The square root of 3731638 is about 1931.7448071627. The cubic root of 3731638 is about 155.1076324917.

The spelling of 3731638 in words is "three million, seven hundred thirty-one thousand, six hundred thirty-eight".