78194 has 4 divisors (see below), whose sum is σ = 117294. Its totient is φ = 39096.

The previous prime is 78193. The next prime is 78203. The reversal of 78194 is 49187.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 49187 = 101 ⋅487.

It can be written as a sum of positive squares in only one way, i.e., 69169 + 9025 = 263^2 + 95^2 .

It is a super-2 number, since 2×78194² = 12228603272, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (78191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19547 + ... + 19550.

2⁷⁸¹⁹⁴ is an apocalyptic number.

78194 is a deficient number, since it is larger than the sum of its proper divisors (39100).

78194 is a wasteful number, since it uses less digits than its factorization.

78194 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39099.

The product of its digits is 2016, while the sum is 29.

The square root of 78194 is about 279.6319008983. The cubic root of 78194 is about 42.7619803866.

It can be divided in two parts, 78 and 194, that added together give a palindrome (272).

The spelling of 78194 in words is "seventy-eight thousand, one hundred ninety-four".