818672133 has 32 divisors (see below), whose sum is σ = 1186093440. Its totient is φ = 500567040.

The previous prime is 818672131. The next prime is 818672161. The reversal of 818672133 is 331276818.

It is not a de Polignac number, because 818672133 - 2¹ = 818672131 is a prime.

It is a super-2 number, since 2×818672133² = 1340448122701539378, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 818672091 and 818672100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (818672131) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 318891 + ... + 321447.

It is an arithmetic number, because the mean of its divisors is an integer number (37065420).

Almost surely, 2^818672133 is an apocalyptic number.

It is an amenable number.

818672133 is a deficient number, since it is larger than the sum of its proper divisors (367421307).

818672133 is a wasteful number, since it uses less digits than its factorization.

818672133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2757.

The product of its digits is 48384, while the sum is 39.

The square root of 818672133 is about 28612.4471690207. The cubic root of 818672133 is about 935.4846574630.

The spelling of 818672133 in words is "eight hundred eighteen million, six hundred seventy-two thousand, one hundred thirty-three".