133333919 has 2 divisors, whose sum is σ = 133333920. Its totient is φ = 133333918.

The previous prime is 133333901. The next prime is 133333933. The reversal of 133333919 is 919333331.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 133333919 - 2¹⁶ = 133268383 is a prime.

It is a super-2 number, since 2×133333919² = 35555867911797122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133333999) 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, 66666959 + 66666960.

It is an arithmetic number, because the mean of its divisors is an integer number (66666960).

Almost surely, 2^133333919 is an apocalyptic number.

133333919 is a deficient number, since it is larger than the sum of its proper divisors (1).

133333919 is an equidigital number, since it uses as much as digits as its factorization.

133333919 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 19683, while the sum is 35.

The square root of 133333919 is about 11547.0307438752. The cubic root of 133333919 is about 510.8737029311.

The spelling of 133333919 in words is "one hundred thirty-three million, three hundred thirty-three thousand, nine hundred nineteen".