129918263 has 8 divisors (see below), whose sum is σ = 130797888. Its totient is φ = 129042144.

The previous prime is 129918209. The next prime is 129918277. The reversal of 129918263 is 362819921.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 129918263 - 2¹⁶ = 129852727 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 129918263.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129918203) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 127745 + ... + 128757.

It is an arithmetic number, because the mean of its divisors is an integer number (16349736).

Almost surely, 2^129918263 is an apocalyptic number.

129918263 is a deficient number, since it is larger than the sum of its proper divisors (879625).

129918263 is a wasteful number, since it uses less digits than its factorization.

129918263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1753.

The product of its digits is 46656, while the sum is 41.

The square root of 129918263 is about 11398.1692828278. The cubic root of 129918263 is about 506.4735096379.

The spelling of 129918263 in words is "one hundred twenty-nine million, nine hundred eighteen thousand, two hundred sixty-three".