199046745 has 12 divisors (see below), whose sum is σ = 345014436. Its totient is φ = 106158240.

The previous prime is 199046737. The next prime is 199046773. The reversal of 199046745 is 547640991.

It can be written as a sum of positive squares in 2 ways, for example, as 104101209 + 94945536 = 10203^2 + 9744^2 .

It is not a de Polignac number, because 199046745 - 2³ = 199046737 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 4423261 = 199046745 / (1 + 9 + 9 + 0 + 4 + 6 + 7 + 4 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 199046745.

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 11 ways as a sum of consecutive naturals, for example, 2211586 + ... + 2211675.

It is an arithmetic number, because the mean of its divisors is an integer number (28751203).

Almost surely, 2^199046745 is an apocalyptic number.

199046745 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

199046745 is a deficient number, since it is larger than the sum of its proper divisors (145967691).

199046745 is a wasteful number, since it uses less digits than its factorization.

199046745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4423272 (or 4423269 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 45.

The square root of 199046745 is about 14108.3927149764. The cubic root of 199046745 is about 583.8729560781.

The spelling of 199046745 in words is "one hundred ninety-nine million, forty-six thousand, seven hundred forty-five".