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118891 is a prime number
BaseRepresentation
bin11101000001101011
320001002101
4131001223
512301031
62314231
71003423
oct350153
9201071
10118891
1181363
1258977
1342166
1431483
1525361
hex1d06b

118891 has 2 divisors, whose sum is σ = 118892. Its totient is φ = 118890.

The previous prime is 118873. The next prime is 118897. The reversal of 118891 is 198811.

It is a strong prime.

It is an emirp because it is prime and its reverse (198811) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-118891 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (118897) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59445 + 59446.

It is an arithmetic number, because the mean of its divisors is an integer number (59446).

2118891 is an apocalyptic number.

118891 is a deficient number, since it is larger than the sum of its proper divisors (1).

118891 is an equidigital number, since it uses as much as digits as its factorization.

118891 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 576, while the sum is 28.

The square root of 118891 is about 344.8057424116. The cubic root of 118891 is about 49.1718249240.

The spelling of 118891 in words is "one hundred eighteen thousand, eight hundred ninety-one".