133839019 has 4 divisors (see below), whose sum is σ = 133863840. Its totient is φ = 133814200.

The previous prime is 133839007. The next prime is 133839053. The reversal of 133839019 is 910938331.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 133839019 - 2²³ = 125450411 is a prime.

It is a super-3 number, since 3×133839019³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133839119) 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 in 3 ways as a sum of consecutive naturals, for example, 532 + ... + 16369.

It is an arithmetic number, because the mean of its divisors is an integer number (33465960).

Almost surely, 2^133839019 is an apocalyptic number.

133839019 is a deficient number, since it is larger than the sum of its proper divisors (24821).

133839019 is an equidigital number, since it uses as much as digits as its factorization.

133839019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24820.

The product of its (nonzero) digits is 17496, while the sum is 37.

The square root of 133839019 is about 11568.8814930399. The cubic root of 133839019 is about 511.5179929758.

The spelling of 133839019 in words is "one hundred thirty-three million, eight hundred thirty-nine thousand, nineteen".