3778 has 4 divisors (see below), whose sum is σ = 5670. Its totient is φ = 1888.

The previous prime is 3769. The next prime is 3779. The reversal of 3778 is 8773.

3778 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8773 = 31 ⋅283.

It can be written as a sum of positive squares in only one way, i.e., 3249 + 529 = 57^2 + 23^2 .

It is a plaindrome in base 10, base 12 and base 15.

It is a nialpdrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3779) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 943 + ... + 946.

2³⁷⁷⁸ is an apocalyptic number.

3778 is a deficient number, since it is larger than the sum of its proper divisors (1892).

3778 is a wasteful number, since it uses less digits than its factorization.

3778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1891.

The product of its digits is 1176, while the sum is 25.

The square root of 3778 is about 61.4654374425. The cubic root of 3778 is about 15.5747344695.

The spelling of 3778 in words is "three thousand, seven hundred seventy-eight".