198785053 has 16 divisors (see below), whose sum is σ = 212382000. Its totient is φ = 185697792.

The previous prime is 198785023. The next prime is 198785057. The reversal of 198785053 is 350587891.

It can be written as a sum of positive squares in 8 ways, for example, as 85618009 + 113167044 = 9253^2 + 10638^2 .

It is a cyclic number.

It is not a de Polignac number, because 198785053 - 2¹⁷ = 198653981 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 198784994 and 198785012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198785057) 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, 245313 + ... + 246121.

It is an arithmetic number, because the mean of its divisors is an integer number (13273875).

Almost surely, 2^198785053 is an apocalyptic number.

It is an amenable number.

198785053 is a deficient number, since it is larger than the sum of its proper divisors (13596947).

198785053 is a wasteful number, since it uses less digits than its factorization.

198785053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1104.

The product of its (nonzero) digits is 302400, while the sum is 46.

The square root of 198785053 is about 14099.1153268565. The cubic root of 198785053 is about 583.6169661401.

The spelling of 198785053 in words is "one hundred ninety-eight million, seven hundred eighty-five thousand, fifty-three".