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164225183 = 283580301
BaseRepresentation
bin10011100100111…
…10000010011111
3102110000111121012
421302132002133
5314020201213
624143525435
74032614423
oct1162360237
9373014535
10164225183
11847788a1
1246bb987b
132803c985
1417b4cb83
15e63e4a8
hex9c9e09f

164225183 has 4 divisors (see below), whose sum is σ = 164805768. Its totient is φ = 163644600.

The previous prime is 164225167. The next prime is 164225291. The reversal of 164225183 is 381522461.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 381522461 = 537198537.

It is a cyclic number.

It is not a de Polignac number, because 164225183 - 24 = 164225167 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 (164225123) 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, 289868 + ... + 290433.

It is an arithmetic number, because the mean of its divisors is an integer number (41201442).

Almost surely, 2164225183 is an apocalyptic number.

164225183 is a deficient number, since it is larger than the sum of its proper divisors (580585).

164225183 is an equidigital number, since it uses as much as digits as its factorization.

164225183 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 580584.

The product of its digits is 11520, while the sum is 32.

The square root of 164225183 is about 12815.0373780181. The cubic root of 164225183 is about 547.6207783140.

The spelling of 164225183 in words is "one hundred sixty-four million, two hundred twenty-five thousand, one hundred eighty-three".

Divisors: 1 283 580301 164225183