18741101 has 2 divisors, whose sum is σ = 18741102. Its totient is φ = 18741100.

The previous prime is 18741097. The next prime is 18741103. The reversal of 18741101 is 10114781.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13147876 + 5593225 = 3626^2 + 2365^2 .

It is a cyclic number.

It is not a de Polignac number, because 18741101 - 2² = 18741097 is a prime.

Together with 18741103, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18741103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9370550 + 9370551.

It is an arithmetic number, because the mean of its divisors is an integer number (9370551).

Almost surely, 2^18741101 is an apocalyptic number.

It is an amenable number.

18741101 is a deficient number, since it is larger than the sum of its proper divisors (1).

18741101 is an equidigital number, since it uses as much as digits as its factorization.

18741101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 224, while the sum is 23.

The square root of 18741101 is about 4329.0993289598. The cubic root of 18741101 is about 265.6226063175.

Adding to 18741101 its reverse (10114781), we get a palindrome (28855882).

The spelling of 18741101 in words is "eighteen million, seven hundred forty-one thousand, one hundred one".