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183132109 = 1710772477
BaseRepresentation
bin10101110101001…
…01111111001101
3110202121002000201
422322211333031
5333340211414
630101053501
74352411566
oct1272457715
9422532021
10183132109
1194411956
12513b7291
132bc2c6c4
141a47116d
1511126574
hexaea5fcd

183132109 has 4 divisors (see below), whose sum is σ = 193904604. Its totient is φ = 172359616.

The previous prime is 183132073. The next prime is 183132121. The reversal of 183132109 is 901231381.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 901231381 = 1396483679.

It can be written as a sum of positive squares in 2 ways, for example, as 75429225 + 107702884 = 8685^2 + 10378^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-183132109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (183132149) 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, 5386222 + ... + 5386255.

It is an arithmetic number, because the mean of its divisors is an integer number (48476151).

Almost surely, 2183132109 is an apocalyptic number.

It is an amenable number.

183132109 is a deficient number, since it is larger than the sum of its proper divisors (10772495).

183132109 is a wasteful number, since it uses less digits than its factorization.

183132109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10772494.

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 183132109 is about 13532.6312666828. The cubic root of 183132109 is about 567.8777230090.

The spelling of 183132109 in words is "one hundred eighty-three million, one hundred thirty-two thousand, one hundred nine".

Divisors: 1 17 10772477 183132109