199832245 has 4 divisors (see below), whose sum is σ = 239798700. Its totient is φ = 159865792.

The previous prime is 199832219. The next prime is 199832249. The reversal of 199832245 is 542238991.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 542238991 = 7 ⋅77462713.

It can be written as a sum of positive squares in 2 ways, for example, as 64738116 + 135094129 = 8046^2 + 11623^2 .

It is a cyclic number.

It is not a de Polignac number, because 199832245 - 2²¹ = 197735093 is a prime.

It is a super-2 number, since 2×199832245² = 79865852283480050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199832249) 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, 19983220 + ... + 19983229.

It is an arithmetic number, because the mean of its divisors is an integer number (59949675).

Almost surely, 2^199832245 is an apocalyptic number.

It is an amenable number.

199832245 is a deficient number, since it is larger than the sum of its proper divisors (39966455).

199832245 is an equidigital number, since it uses as much as digits as its factorization.

199832245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39966454.

The product of its digits is 155520, while the sum is 43.

The square root of 199832245 is about 14136.2033446042. The cubic root of 199832245 is about 584.6399957077.

It can be divided in two parts, 1998 and 32245, that added together give a palindrome (34243).

The spelling of 199832245 in words is "one hundred ninety-nine million, eight hundred thirty-two thousand, two hundred forty-five".