3745638 has 24 divisors (see below), whose sum is σ = 8740368. Its totient is φ = 1152432.

The previous prime is 3745631. The next prime is 3745649. The reversal of 3745638 is 8365473.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3745631) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7770 + ... + 8237.

It is an arithmetic number, because the mean of its divisors is an integer number (364182).

Almost surely, 2^3745638 is an apocalyptic number.

3745638 is an abundant number, since it is smaller than the sum of its proper divisors (4994730).

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

3745638 is a wasteful number, since it uses less digits than its factorization.

3745638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16028 (or 16025 counting only the distinct ones).

The product of its digits is 60480, while the sum is 36.

The square root of 3745638 is about 1935.3650818386. The cubic root of 3745638 is about 155.3013630451.

The spelling of 3745638 in words is "three million, seven hundred forty-five thousand, six hundred thirty-eight".