133378329 has 16 divisors (see below), whose sum is σ = 204423552. Its totient is φ = 75773568.

The previous prime is 133378313. The next prime is 133378331. The reversal of 133378329 is 923873331.

It is not a de Polignac number, because 133378329 - 2⁴ = 133378313 is a prime.

It is not an unprimeable number, because it can be changed into a prime (133378129) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14724 + ... + 21989.

It is an arithmetic number, because the mean of its divisors is an integer number (12776472).

Almost surely, 2^133378329 is an apocalyptic number.

It is an amenable number.

133378329 is a deficient number, since it is larger than the sum of its proper divisors (71045223).

133378329 is a wasteful number, since it uses less digits than its factorization.

133378329 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36896.

The product of its digits is 81648, while the sum is 39.

The square root of 133378329 is about 11548.9535889621. The cubic root of 133378329 is about 510.9304161387.

The spelling of 133378329 in words is "one hundred thirty-three million, three hundred seventy-eight thousand, three hundred twenty-nine".