818374 has 4 divisors (see below), whose sum is σ = 1227564. Its totient is φ = 409186.

The previous prime is 818371. The next prime is 818383. The reversal of 818374 is 473818.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 473818 = 2 ⋅236909.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (818371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 204592 + ... + 204595.

It is an arithmetic number, because the mean of its divisors is an integer number (306891).

2⁸¹⁸³⁷⁴ is an apocalyptic number.

818374 is a deficient number, since it is larger than the sum of its proper divisors (409190).

818374 is a wasteful number, since it uses less digits than its factorization.

818374 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 409189.

The product of its digits is 5376, while the sum is 31.

The square root of 818374 is about 904.6402599929. The cubic root of 818374 is about 93.5371086271.

The spelling of 818374 in words is "eight hundred eighteen thousand, three hundred seventy-four".