198057729 has 16 divisors (see below), whose sum is σ = 286945280. Its totient is φ = 121052880.

The previous prime is 198057709. The next prime is 198057731. The reversal of 198057729 is 927750891.

198057729 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 198057729 - 2⁵ = 198057697 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (198057709) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54277 + ... + 57810.

It is an arithmetic number, because the mean of its divisors is an integer number (17934080).

Almost surely, 2^198057729 is an apocalyptic number.

198057729 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

198057729 is a deficient number, since it is larger than the sum of its proper divisors (88887551).

198057729 is a wasteful number, since it uses less digits than its factorization.

198057729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112140.

The product of its (nonzero) digits is 317520, while the sum is 48.

The square root of 198057729 is about 14073.2984406642. The cubic root of 198057729 is about 582.9043079607.

The spelling of 198057729 in words is "one hundred ninety-eight million, fifty-seven thousand, seven hundred twenty-nine".