818433232378 has 16 divisors (see below), whose sum is σ = 1228422797280. Its totient is φ = 408959035056.

The previous prime is 818433232373. The next prime is 818433232387. The reversal of 818433232378 is 873232334818.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (818433232373) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33644676 + ... + 33668992.

It is an arithmetic number, because the mean of its divisors is an integer number (76776424830).

Almost surely, 2^818433232378 is an apocalyptic number.

818433232378 is a deficient number, since it is larger than the sum of its proper divisors (409989564902).

818433232378 is a wasteful number, since it uses less digits than its factorization.

818433232378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34221.

The product of its digits is 4644864, while the sum is 52.

The spelling of 818433232378 in words is "eight hundred eighteen billion, four hundred thirty-three million, two hundred thirty-two thousand, three hundred seventy-eight".