829181909109 has 8 divisors (see below), whose sum is σ = 1163764083040. Its totient is φ = 523693837296.

The previous prime is 829181909081. The next prime is 829181909131. The reversal of 829181909109 is 901909181928.

829181909109 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 829181909109 - 2²³ = 829173520501 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (57), and also a Moran number because the ratio is a prime number: 14547051037 = 829181909109 / (8 + 2 + 9 + 1 + 8 + 1 + 9 + 0 + 9 + 1 + 0 + 9).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (829181909209) 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, 7273525462 + ... + 7273525575.

It is an arithmetic number, because the mean of its divisors is an integer number (145470510380).

Almost surely, 2^829181909109 is an apocalyptic number.

It is an amenable number.

829181909109 is a deficient number, since it is larger than the sum of its proper divisors (334582173931).

829181909109 is a wasteful number, since it uses less digits than its factorization.

829181909109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14547051059.

The product of its (nonzero) digits is 839808, while the sum is 57.

The spelling of 829181909109 in words is "eight hundred twenty-nine billion, one hundred eighty-one million, nine hundred nine thousand, one hundred nine".