814993133 has 2 divisors, whose sum is σ = 814993134. Its totient is φ = 814993132.

The previous prime is 814993103. The next prime is 814993169. The reversal of 814993133 is 331399418.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 789722404 + 25270729 = 28102^2 + 5027^2 .

It is a cyclic number.

It is not a de Polignac number, because 814993133 - 2⁸ = 814992877 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (814993103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 407496566 + 407496567.

It is an arithmetic number, because the mean of its divisors is an integer number (407496567).

Almost surely, 2^814993133 is an apocalyptic number.

It is an amenable number.

814993133 is a deficient number, since it is larger than the sum of its proper divisors (1).

814993133 is an equidigital number, since it uses as much as digits as its factorization.

814993133 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 69984, while the sum is 41.

The square root of 814993133 is about 28548.0845767277. The cubic root of 814993133 is about 934.0812399626.

The spelling of 814993133 in words is "eight hundred fourteen million, nine hundred ninety-three thousand, one hundred thirty-three".