378400361 has 4 divisors (see below), whose sum is σ = 379153152. Its totient is φ = 377647572.

The previous prime is 378400343. The next prime is 378400397. The reversal of 378400361 is 163004873.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-378400361 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (378400261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 375641 + ... + 376646.

It is an arithmetic number, because the mean of its divisors is an integer number (94788288).

Almost surely, 2^378400361 is an apocalyptic number.

It is an amenable number.

378400361 is a deficient number, since it is larger than the sum of its proper divisors (752791).

378400361 is an equidigital number, since it uses as much as digits as its factorization.

378400361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 752790.

The product of its (nonzero) digits is 12096, while the sum is 32.

The square root of 378400361 is about 19452.5155442683. The cubic root of 378400361 is about 723.2978608658.

The spelling of 378400361 in words is "three hundred seventy-eight million, four hundred thousand, three hundred sixty-one".