378491 has 4 divisors (see below), whose sum is σ = 386592. Its totient is φ = 370392.

The previous prime is 378467. The next prime is 378493. The reversal of 378491 is 194873.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 378491 - 2¹⁴ = 362107 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (378493) 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, 3980 + ... + 4073.

It is an arithmetic number, because the mean of its divisors is an integer number (96648).

2³⁷⁸⁴⁹¹ is an apocalyptic number.

378491 is a deficient number, since it is larger than the sum of its proper divisors (8101).

378491 is an equidigital number, since it uses as much as digits as its factorization.

378491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8100.

The product of its digits is 6048, while the sum is 32.

The square root of 378491 is about 615.2162221528. The cubic root of 378491 is about 72.3355607253.

The spelling of 378491 in words is "three hundred seventy-eight thousand, four hundred ninety-one".