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19158 = 2331103
BaseRepresentation
bin100101011010110
3222021120
410223112
51103113
6224410
7106566
oct45326
928246
1019158
1113437
12b106
138949
146da6
155a23

19158 has 16 divisors (see below), whose sum is σ = 39936. Its totient is φ = 6120.

The previous prime is 19157. The next prime is 19163. The reversal of 19158 is 85191.

It is a Curzon number.

It is a congruent number.

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

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 135 + ... + 237.

It is an arithmetic number, because the mean of its divisors is an integer number (2496).

219158 is an apocalyptic number.

19158 is an abundant number, since it is smaller than the sum of its proper divisors (20778).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19968).

19158 is a wasteful number, since it uses less digits than its factorization.

19158 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139.

The product of its digits is 360, while the sum is 24.

The square root of 19158 is about 138.4124271877. The cubic root of 19158 is about 26.7577786212.

The spelling of 19158 in words is "nineteen thousand, one hundred fifty-eight".