129464818 has 16 divisors (see below), whose sum is σ = 222269760. Its totient is φ = 55402416.

The previous prime is 129464807. The next prime is 129464893. The reversal of 129464818 is 818464921.

It is a super-2 number, since 2×129464818² = 33522278199546248, which contains 22 as substring.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 3405 + ... + 16447.

It is an arithmetic number, because the mean of its divisors is an integer number (13891860).

Almost surely, 2^129464818 is an apocalyptic number.

129464818 is a deficient number, since it is larger than the sum of its proper divisors (92804942).

129464818 is a wasteful number, since it uses less digits than its factorization.

129464818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13761.

The product of its digits is 110592, while the sum is 43.

The square root of 129464818 is about 11378.2607634032. The cubic root of 129464818 is about 505.8835859401.

The spelling of 129464818 in words is "one hundred twenty-nine million, four hundred sixty-four thousand, eight hundred eighteen".