818023834 has 12 divisors (see below), whose sum is σ = 1295016714. Its totient is φ = 387484632.

The previous prime is 818023781. The next prime is 818023859. The reversal of 818023834 is 438320818.

It can be written as a sum of positive squares in only one way, i.e., 694480609 + 123543225 = 26353^2 + 11115^2 .

It is a junction number, because it is equal to n+sod(n) for n = 818023793 and 818023802.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 565777 + ... + 567220.

Almost surely, 2^818023834 is an apocalyptic number.

818023834 is a deficient number, since it is larger than the sum of its proper divisors (476992880).

818023834 is a wasteful number, since it uses less digits than its factorization.

818023834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1133037 (or 1133018 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 37.

The square root of 818023834 is about 28601.1159572489. The cubic root of 818023834 is about 935.2376583282.

The spelling of 818023834 in words is "eight hundred eighteen million, twenty-three thousand, eight hundred thirty-four".