378361 has 2 divisors, whose sum is σ = 378362. Its totient is φ = 378360.

The previous prime is 378353. The next prime is 378379. The reversal of 378361 is 163873.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 354025 + 24336 = 595^2 + 156^2 .

It is a cyclic number.

It is not a de Polignac number, because 378361 - 2³ = 378353 is a prime.

It is not a weakly prime, because it can be changed into another prime (378661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 189180 + 189181.

It is an arithmetic number, because the mean of its divisors is an integer number (189181).

2³⁷⁸³⁶¹ is an apocalyptic number.

It is an amenable number.

378361 is a deficient number, since it is larger than the sum of its proper divisors (1).

378361 is an equidigital number, since it uses as much as digits as its factorization.

378361 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3024, while the sum is 28.

The square root of 378361 is about 615.1105591680. The cubic root of 378361 is about 72.3272780979.

It can be divided in two parts, 3783 and 61, that added together give a square (3844 = 62²).

The spelling of 378361 in words is "three hundred seventy-eight thousand, three hundred sixty-one".