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19153 = 107179

19153 has 4 divisors (see below), whose sum is σ = 19440. Its totient is φ = 18868.

The previous prime is 19141. The next prime is 19157. The reversal of 19153 is 35191.

It is the 57-th star number.

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, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 35191 = 132707.

It is a cyclic number.

It is not a de Polignac number, because 19153 - 25 = 19121 is a prime.

It is a Duffinian number.

19153 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 19153.

It is not an unprimeable number, because it can be changed into a prime (19157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18 + ... + 196.

It is an arithmetic number, because the mean of its divisors is an integer number (4860).

219153 is an apocalyptic number.

It is an amenable number.

19153 is a deficient number, since it is larger than the sum of its proper divisors (287).

19153 is a wasteful number, since it uses less digits than its factorization.

19153 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 286.

The product of its digits is 135, while the sum is 19.

The square root of 19153 is about 138.3943640471. The cubic root of 19153 is about 26.7554506027.

The spelling of 19153 in words is "nineteen thousand, one hundred fifty-three".

Divisors: 1 107 179 19153