129151868 has 12 divisors (see below), whose sum is σ = 226122792. Its totient is φ = 64545360.

The previous prime is 129151849. The next prime is 129151871. The reversal of 129151868 is 868151921.

It is a congruent number.

It is an unprimeable number.

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, 3746 + ... + 16502.

It is an arithmetic number, because the mean of its divisors is an integer number (18843566).

Almost surely, 2^129151868 is an apocalyptic number.

It is an amenable number.

129151868 is a deficient number, since it is larger than the sum of its proper divisors (96970924).

129151868 is a wasteful number, since it uses less digits than its factorization.

129151868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15292 (or 15290 counting only the distinct ones).

The product of its digits is 34560, while the sum is 41.

The square root of 129151868 is about 11364.5003409741. The cubic root of 129151868 is about 505.4756398379.

The spelling of 129151868 in words is "one hundred twenty-nine million, one hundred fifty-one thousand, eight hundred sixty-eight".