199649763 has 12 divisors (see below), whose sum is σ = 288793440. Its totient is φ = 132910416.

The previous prime is 199649759. The next prime is 199649773. The reversal of 199649763 is 367946991.

199649763 is a `hidden beast` number, since 1 + 9 + 96 + 497 + 63 = 666.

It is not a de Polignac number, because 199649763 - 2² = 199649759 is a prime.

It is not an unprimeable number, because it can be changed into a prime (199649753) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8956 + ... + 21897.

It is an arithmetic number, because the mean of its divisors is an integer number (24066120).

Almost surely, 2^199649763 is an apocalyptic number.

199649763 is a deficient number, since it is larger than the sum of its proper divisors (89143677).

199649763 is a wasteful number, since it uses less digits than its factorization.

199649763 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31578 (or 31575 counting only the distinct ones).

The product of its digits is 2204496, while the sum is 54.

The square root of 199649763 is about 14129.7474499723. The cubic root of 199649763 is about 584.4619817831.

The spelling of 199649763 in words is "one hundred ninety-nine million, six hundred forty-nine thousand, seven hundred sixty-three".