133828819 has 2 divisors, whose sum is σ = 133828820. Its totient is φ = 133828818.

The previous prime is 133828817. The next prime is 133828831. The reversal of 133828819 is 918828331.

It is a weak prime.

It is an emirp because it is prime and its reverse (918828331) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 133828819 - 2¹ = 133828817 is a prime.

It is a super-2 number, since 2×133828819² = 35820305589869522, which contains 22 as substring.

Together with 133828817, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (133828817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66914409 + 66914410.

It is an arithmetic number, because the mean of its divisors is an integer number (66914410).

Almost surely, 2^133828819 is an apocalyptic number.

133828819 is a deficient number, since it is larger than the sum of its proper divisors (1).

133828819 is an equidigital number, since it uses as much as digits as its factorization.

133828819 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 82944, while the sum is 43.

The square root of 133828819 is about 11568.4406468633. The cubic root of 133828819 is about 511.5049982200.

It can be divided in two parts, 13382 and 8819, that added together give a square (22201 = 149²).

The spelling of 133828819 in words is "one hundred thirty-three million, eight hundred twenty-eight thousand, eight hundred nineteen".