378145 has 4 divisors (see below), whose sum is σ = 453780. Its totient is φ = 302512.

The previous prime is 378137. The next prime is 378149. The reversal of 378145 is 541873.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 541873 = 701 ⋅773.

It can be written as a sum of positive squares in 2 ways, for example, as 300304 + 77841 = 548^2 + 279^2 .

It is a cyclic number.

It is not a de Polignac number, because 378145 - 2³ = 378137 is a prime.

It is not an unprimeable number, because it can be changed into a prime (378149) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37810 + ... + 37819.

It is an arithmetic number, because the mean of its divisors is an integer number (113445).

2³⁷⁸¹⁴⁵ is an apocalyptic number.

It is an amenable number.

378145 is a deficient number, since it is larger than the sum of its proper divisors (75635).

378145 is an equidigital number, since it uses as much as digits as its factorization.

378145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75634.

The product of its digits is 3360, while the sum is 28.

The square root of 378145 is about 614.9349559100. The cubic root of 378145 is about 72.3135119981.

The spelling of 378145 in words is "three hundred seventy-eight thousand, one hundred forty-five".