818605378 has 8 divisors (see below), whose sum is σ = 1230090768. Its totient is φ = 408575124.

The previous prime is 818605349. The next prime is 818605387. The reversal of 818605378 is 873506818.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×818605378² = 1340229529781045768, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 362376 + ... + 364627.

It is an arithmetic number, because the mean of its divisors is an integer number (153761346).

Almost surely, 2^818605378 is an apocalyptic number.

818605378 is a deficient number, since it is larger than the sum of its proper divisors (411485390).

818605378 is a wasteful number, since it uses less digits than its factorization.

818605378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 727568.

The product of its (nonzero) digits is 322560, while the sum is 46.

The square root of 818605378 is about 28611.2806074807. The cubic root of 818605378 is about 935.4592301182.

Subtracting from 818605378 its product of nonzero digits (322560), we obtain a palindrome (818282818).

The spelling of 818605378 in words is "eight hundred eighteen million, six hundred five thousand, three hundred seventy-eight".