378165 has 16 divisors (see below), whose sum is σ = 641088. Its totient is φ = 189696.

The previous prime is 378163. The next prime is 378167. The reversal of 378165 is 561873.

378165 = T₂₇₀ + T₂₇₁ + ... + T₂₇₉.

378165 is nontrivially palindromic in base 4.

It is an interprime number because it is at equal distance from previous prime (378163) and next prime (378167).

It is not a de Polignac number, because 378165 - 2¹ = 378163 is a prime.

It is a Curzon number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 378165.

It is not an unprimeable number, because it can be changed into a prime (378163) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 487 + ... + 996.

It is an arithmetic number, because the mean of its divisors is an integer number (40068).

2³⁷⁸¹⁶⁵ is an apocalyptic number.

It is an amenable number.

378165 is a deficient number, since it is larger than the sum of its proper divisors (262923).

378165 is a wasteful number, since it uses less digits than its factorization.

378165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1508.

The product of its digits is 5040, while the sum is 30.

The square root of 378165 is about 614.9512175775. The cubic root of 378165 is about 72.3147868571.

The spelling of 378165 in words is "three hundred seventy-eight thousand, one hundred sixty-five".