814438133 has 2 divisors, whose sum is σ = 814438134. Its totient is φ = 814438132.

The previous prime is 814438123. The next prime is 814438153. The reversal of 814438133 is 331834418.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 749828689 + 64609444 = 27383^2 + 8038^2 .

It is a cyclic number.

It is not a de Polignac number, because 814438133 - 2⁶ = 814438069 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 814438093 and 814438102.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (814438123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 407219066 + 407219067.

It is an arithmetic number, because the mean of its divisors is an integer number (407219067).

Almost surely, 2^814438133 is an apocalyptic number.

It is an amenable number.

814438133 is a deficient number, since it is larger than the sum of its proper divisors (1).

814438133 is an equidigital number, since it uses as much as digits as its factorization.

814438133 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27648, while the sum is 35.

The square root of 814438133 is about 28538.3624793014. The cubic root of 814438133 is about 933.8691593165.

The spelling of 814438133 in words is "eight hundred fourteen million, four hundred thirty-eight thousand, one hundred thirty-three".