18101099 has 2 divisors, whose sum is σ = 18101100. Its totient is φ = 18101098.

The previous prime is 18101089. The next prime is 18101123. The reversal of 18101099 is 99010181.

It is a weak prime.

It is an emirp because it is prime and its reverse (99010181) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18101099 - 2¹² = 18097003 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (18101059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9050549 + 9050550.

It is an arithmetic number, because the mean of its divisors is an integer number (9050550).

Almost surely, 2^18101099 is an apocalyptic number.

18101099 is a deficient number, since it is larger than the sum of its proper divisors (1).

18101099 is an equidigital number, since it uses as much as digits as its factorization.

18101099 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 29.

The square root of 18101099 is about 4254.5386353869. The cubic root of 18101099 is about 262.5638798427.

The spelling of 18101099 in words is "eighteen million, one hundred one thousand, ninety-nine".