199561016 has 16 divisors (see below), whose sum is σ = 374754600. Its totient is φ = 99626464.

The previous prime is 199561003. The next prime is 199561067. The reversal of 199561016 is 610165991.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13655 + ... + 24198.

Almost surely, 2^199561016 is an apocalyptic number.

It is an amenable number.

199561016 is a deficient number, since it is larger than the sum of its proper divisors (175193584).

199561016 is a wasteful number, since it uses less digits than its factorization.

199561016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38518 (or 38514 counting only the distinct ones).

The product of its (nonzero) digits is 14580, while the sum is 38.

The square root of 199561016 is about 14126.6066696854. The cubic root of 199561016 is about 584.3753685491.

The spelling of 199561016 in words is "one hundred ninety-nine million, five hundred sixty-one thousand, sixteen".