814128533 has 4 divisors (see below), whose sum is σ = 814761420. Its totient is φ = 813495648.

The previous prime is 814128527. The next prime is 814128563. The reversal of 814128533 is 335821418.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 335821418 = 2 ⋅167910709.

It can be written as a sum of positive squares in 2 ways, for example, as 492751204 + 321377329 = 22198^2 + 17927^2 .

It is a cyclic number.

It is not a de Polignac number, because 814128533 - 2⁴ = 814128517 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 814128493 and 814128502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (814128563) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 314510 + ... + 317087.

It is an arithmetic number, because the mean of its divisors is an integer number (203690355).

Almost surely, 2^814128533 is an apocalyptic number.

It is an amenable number.

814128533 is a deficient number, since it is larger than the sum of its proper divisors (632887).

814128533 is a wasteful number, since it uses less digits than its factorization.

814128533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 632886.

The product of its digits is 23040, while the sum is 35.

The square root of 814128533 is about 28532.9376861199. The cubic root of 814128533 is about 933.7508108405.

The spelling of 814128533 in words is "eight hundred fourteen million, one hundred twenty-eight thousand, five hundred thirty-three".