3778138 has 16 divisors (see below), whose sum is σ = 6975360. Its totient is φ = 1494576.

The previous prime is 3778127. The next prime is 3778163. The reversal of 3778138 is 8318773.

It is a junction number, because it is equal to n+sod(n) for n = 3778097 and 3778106.

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, 10198 + ... + 10561.

It is an arithmetic number, because the mean of its divisors is an integer number (435960).

Almost surely, 2^3778138 is an apocalyptic number.

3778138 is a deficient number, since it is larger than the sum of its proper divisors (3197222).

3778138 is a wasteful number, since it uses less digits than its factorization.

3778138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20781.

The product of its digits is 28224, while the sum is 37.

The square root of 3778138 is about 1943.7432958084. The cubic root of 3778138 is about 155.7492410132.

It can be divided in two parts, 3778 and 138, that added together give a triangular number (3916 = T₈₈).

The spelling of 3778138 in words is "three million, seven hundred seventy-eight thousand, one hundred thirty-eight".