191680429 has 8 divisors (see below), whose sum is σ = 196939008. Its totient is φ = 186471120.

The previous prime is 191680403. The next prime is 191680469. The reversal of 191680429 is 924086191.

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 191680429 - 2⁵ = 191680397 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 191680391 and 191680400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (191680469) 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, 4362 + ... + 20059.

It is an arithmetic number, because the mean of its divisors is an integer number (24617376).

Almost surely, 2^191680429 is an apocalyptic number.

It is an amenable number.

191680429 is a deficient number, since it is larger than the sum of its proper divisors (5258579).

191680429 is a wasteful number, since it uses less digits than its factorization.

191680429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24635.

The product of its (nonzero) digits is 31104, while the sum is 40.

The square root of 191680429 is about 13844.8701330132. The cubic root of 191680429 is about 576.5795801458.

The spelling of 191680429 in words is "one hundred ninety-one million, six hundred eighty thousand, four hundred twenty-nine".