18819341 has 2 divisors, whose sum is σ = 18819342. Its totient is φ = 18819340.

The previous prime is 18819319. The next prime is 18819371. The reversal of 18819341 is 14391881.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16370116 + 2449225 = 4046^2 + 1565^2 .

It is a cyclic number.

It is not a de Polignac number, because 18819341 - 2⁶ = 18819277 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18819371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9409670 + 9409671.

It is an arithmetic number, because the mean of its divisors is an integer number (9409671).

Almost surely, 2^18819341 is an apocalyptic number.

It is an amenable number.

18819341 is a deficient number, since it is larger than the sum of its proper divisors (1).

18819341 is an equidigital number, since it uses as much as digits as its factorization.

18819341 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6912, while the sum is 35.

The square root of 18819341 is about 4338.1264389135. The cubic root of 18819341 is about 265.9917318929.

The spelling of 18819341 in words is "eighteen million, eight hundred nineteen thousand, three hundred forty-one".