190681729 has 8 divisors (see below), whose sum is σ = 219490880. Its totient is φ = 162264816.

The previous prime is 190681717. The next prime is 190681759. The reversal of 190681729 is 927186091.

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

It is not a de Polignac number, because 190681729 - 2⁵ = 190681697 is a prime.

It is not an unprimeable number, because it can be changed into a prime (190681759) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 97014 + ... + 98959.

It is an arithmetic number, because the mean of its divisors is an integer number (27436360).

Almost surely, 2^190681729 is an apocalyptic number.

It is an amenable number.

190681729 is a deficient number, since it is larger than the sum of its proper divisors (28809151).

190681729 is a wasteful number, since it uses less digits than its factorization.

190681729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196119.

The product of its (nonzero) digits is 54432, while the sum is 43.

The square root of 190681729 is about 13808.7555195970. The cubic root of 190681729 is about 575.5764643445.

The spelling of 190681729 in words is "one hundred ninety million, six hundred eighty-one thousand, seven hundred twenty-nine".