199733145 has 8 divisors (see below), whose sum is σ = 319573056. Its totient is φ = 106524336.

The previous prime is 199733143. The next prime is 199733213. The reversal of 199733145 is 541337991.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 199733145 - 2¹ = 199733143 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 199733097 and 199733106.

It is not an unprimeable number, because it can be changed into a prime (199733143) 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 7 ways as a sum of consecutive naturals, for example, 6657757 + ... + 6657786.

It is an arithmetic number, because the mean of its divisors is an integer number (39946632).

Almost surely, 2^199733145 is an apocalyptic number.

199733145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

199733145 is a deficient number, since it is larger than the sum of its proper divisors (119839911).

199733145 is a wasteful number, since it uses less digits than its factorization.

199733145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13315551.

The product of its digits is 102060, while the sum is 42.

The square root of 199733145 is about 14132.6977254875. The cubic root of 199733145 is about 584.5433356256.

The spelling of 199733145 in words is "one hundred ninety-nine million, seven hundred thirty-three thousand, one hundred forty-five".