199028061 has 12 divisors (see below), whose sum is σ = 304396092. Its totient is φ = 124880256.

The previous prime is 199028047. The next prime is 199028077. The reversal of 199028061 is 160820991.

It can be written as a sum of positive squares in 2 ways, for example, as 123076836 + 75951225 = 11094^2 + 8715^2 .

It is not a de Polignac number, because 199028061 - 2¹³ = 199019869 is a prime.

It is a super-2 number, since 2×199028061² = 79224338130839442, which contains 22 as substring.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199028261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 650266 + ... + 650571.

It is an arithmetic number, because the mean of its divisors is an integer number (25366341).

Almost surely, 2^199028061 is an apocalyptic number.

It is an amenable number.

199028061 is a deficient number, since it is larger than the sum of its proper divisors (105368031).

199028061 is a wasteful number, since it uses less digits than its factorization.

199028061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1300860 (or 1300857 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 36.

The square root of 199028061 is about 14107.7305403810. The cubic root of 199028061 is about 583.8546866281.

The spelling of 199028061 in words is "one hundred ninety-nine million, twenty-eight thousand, sixty-one".