199045361 has 4 divisors (see below), whose sum is σ = 199076592. Its totient is φ = 199014132.

The previous prime is 199045351. The next prime is 199045397. The reversal of 199045361 is 163540991.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 199045361 - 2¹⁸ = 198783217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (199045321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2231 + ... + 20076.

It is an arithmetic number, because the mean of its divisors is an integer number (49769148).

Almost surely, 2^199045361 is an apocalyptic number.

It is an amenable number.

199045361 is a deficient number, since it is larger than the sum of its proper divisors (31231).

199045361 is an equidigital number, since it uses as much as digits as its factorization.

199045361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31230.

The product of its (nonzero) digits is 29160, while the sum is 38.

The square root of 199045361 is about 14108.3436660722. The cubic root of 199045361 is about 583.8716028247.

The spelling of 199045361 in words is "one hundred ninety-nine million, forty-five thousand, three hundred sixty-one".