3778145 has 16 divisors (see below), whose sum is σ = 5289600. Its totient is φ = 2589552.

The previous prime is 3778127. The next prime is 3778163. The reversal of 3778145 is 5418773.

3778145 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (3778127) and next prime (3778163).

It is not a de Polignac number, because 3778145 - 2⁶ = 3778081 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 614 + ... + 2816.

It is an arithmetic number, because the mean of its divisors is an integer number (330600).

Almost surely, 2^3778145 is an apocalyptic number.

3778145 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

3778145 is a deficient number, since it is larger than the sum of its proper divisors (1511455).

3778145 is an equidigital number, since it uses as much as digits as its factorization.

3778145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2229 (or 2215 counting only the distinct ones).

The product of its digits is 23520, while the sum is 35.

The square root of 3778145 is about 1943.7450964568. The cubic root of 3778145 is about 155.7493372021.

The spelling of 3778145 in words is "three million, seven hundred seventy-eight thousand, one hundred forty-five".