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199113293 = 1910479647
BaseRepresentation
bin10111101111000…
…11101001001101
3111212200000002102
423313203221031
5401433111133
631431404445
74635302141
oct1367435115
9455600072
10199113293
11a2437845
1256823725
1332336822
141c631221
15127317e8
hexbde3a4d

199113293 has 4 divisors (see below), whose sum is σ = 209592960. Its totient is φ = 188633628.

The previous prime is 199113287. The next prime is 199113307. The reversal of 199113293 is 392311991.

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 199113293 - 28 = 199113037 is a prime.

It is a super-2 number, since 2×1991132932 = 79292206898607698, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199113283) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 5239805 + ... + 5239842.

It is an arithmetic number, because the mean of its divisors is an integer number (52398240).

Almost surely, 2199113293 is an apocalyptic number.

It is an amenable number.

199113293 is a deficient number, since it is larger than the sum of its proper divisors (10479667).

199113293 is a wasteful number, since it uses less digits than its factorization.

199113293 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10479666.

The product of its digits is 13122, while the sum is 38.

The square root of 199113293 is about 14110.7509722197. The cubic root of 199113293 is about 583.9380182624.

The spelling of 199113293 in words is "one hundred ninety-nine million, one hundred thirteen thousand, two hundred ninety-three".

Divisors: 1 19 10479647 199113293