394818136 has 32 divisors (see below), whose sum is σ = 755110080. Its totient is φ = 193485600.

The previous prime is 394818133. The next prime is 394818143. The reversal of 394818136 is 631818493.

It is a junction number, because it is equal to n+sod(n) for n = 394818092 and 394818101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (394818133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 111351 + ... + 114841.

It is an arithmetic number, because the mean of its divisors is an integer number (23597190).

Almost surely, 2^394818136 is an apocalyptic number.

It is an amenable number.

394818136 is a deficient number, since it is larger than the sum of its proper divisors (360291944).

394818136 is a wasteful number, since it uses less digits than its factorization.

394818136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3775 (or 3771 counting only the distinct ones).

The product of its digits is 124416, while the sum is 43.

The square root of 394818136 is about 19870.0311021397. The cubic root of 394818136 is about 733.6107690397.

The spelling of 394818136 in words is "three hundred ninety-four million, eight hundred eighteen thousand, one hundred thirty-six".