197378 has 4 divisors (see below), whose sum is σ = 296070. Its totient is φ = 98688.

The previous prime is 197371. The next prime is 197381. The reversal of 197378 is 873791.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 873791 = 19 ⋅45989.

It can be written as a sum of positive squares in only one way, i.e., 162409 + 34969 = 403^2 + 187^2 .

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (197371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49343 + ... + 49346.

2¹⁹⁷³⁷⁸ is an apocalyptic number.

197378 is a deficient number, since it is larger than the sum of its proper divisors (98692).

197378 is an equidigital number, since it uses as much as digits as its factorization.

197378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98691.

The product of its digits is 10584, while the sum is 35.

The square root of 197378 is about 444.2724389381. The cubic root of 197378 is about 58.2236706147.

It can be divided in two parts, 197 and 378, that added together give a palindrome (575).

The spelling of 197378 in words is "one hundred ninety-seven thousand, three hundred seventy-eight".