199068145 has 8 divisors (see below), whose sum is σ = 240996456. Its totient is φ = 157844736.

The previous prime is 199068137. The next prime is 199068173. The reversal of 199068145 is 541860991.

It can be written as a sum of positive squares in 4 ways, for example, as 6885376 + 192182769 = 2624^2 + 13863^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 199068145 - 2³ = 199068137 is a prime.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 175602 + ... + 176731.

It is an arithmetic number, because the mean of its divisors is an integer number (30124557).

Almost surely, 2^199068145 is an apocalyptic number.

It is an amenable number.

199068145 is a deficient number, since it is larger than the sum of its proper divisors (41928311).

199068145 is a wasteful number, since it uses less digits than its factorization.

199068145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 352451.

The product of its (nonzero) digits is 77760, while the sum is 43.

The square root of 199068145 is about 14109.1511084119. The cubic root of 199068145 is about 583.8938798624.

The spelling of 199068145 in words is "one hundred ninety-nine million, sixty-eight thousand, one hundred forty-five".