129933018 has 32 divisors (see below), whose sum is σ = 295787520. Its totient is φ = 42253920.

The previous prime is 129933017. The next prime is 129933019. The reversal of 129933018 is 810339921.

It is an interprime number because it is at equal distance from previous prime (129933017) and next prime (129933019).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (129933017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27130 + ... + 31557.

It is an arithmetic number, because the mean of its divisors is an integer number (9243360).

Almost surely, 2^129933018 is an apocalyptic number.

129933018 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

129933018 is an abundant number, since it is smaller than the sum of its proper divisors (165854502).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

129933018 is a wasteful number, since it uses less digits than its factorization.

129933018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58739 (or 58733 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 36.

The square root of 129933018 is about 11398.8165175162. The cubic root of 129933018 is about 506.4926825486.

The spelling of 129933018 in words is "one hundred twenty-nine million, nine hundred thirty-three thousand, eighteen".