129316194 has 36 divisors (see below), whose sum is σ = 325931814. Its totient is φ = 36947232.

The previous prime is 129316193. The next prime is 129316211. The reversal of 129316194 is 491613921.

It is a happy number.

129316194 is a `hidden beast` number, since 1 + 2 + 9 + 31 + 619 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 108930969 + 20385225 = 10437^2 + 4515^2 .

It is not an unprimeable number, because it can be changed into a prime (129316193) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 72427 + ... + 74190.

Almost surely, 2^129316194 is an apocalyptic number.

129316194 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

129316194 is an abundant number, since it is smaller than the sum of its proper divisors (196615620).

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

129316194 is a wasteful number, since it uses less digits than its factorization.

129316194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146639 (or 146629 counting only the distinct ones).

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

The square root of 129316194 is about 11371.7278370527. The cubic root of 129316194 is about 505.6899291289.

The spelling of 129316194 in words is "one hundred twenty-nine million, three hundred sixteen thousand, one hundred ninety-four".