18897341 has 2 divisors, whose sum is σ = 18897342. Its totient is φ = 18897340.

The previous prime is 18897331. The next prime is 18897391. The reversal of 18897341 is 14379881.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15760900 + 3136441 = 3970^2 + 1771^2 .

It is a cyclic number.

It is not a de Polignac number, because 18897341 - 2²² = 14703037 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18897311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9448670 + 9448671.

It is an arithmetic number, because the mean of its divisors is an integer number (9448671).

Almost surely, 2^18897341 is an apocalyptic number.

It is an amenable number.

18897341 is a deficient number, since it is larger than the sum of its proper divisors (1).

18897341 is an equidigital number, since it uses as much as digits as its factorization.

18897341 is an evil number, because the sum of its binary digits is even.

The product of its digits is 48384, while the sum is 41.

The square root of 18897341 is about 4347.1071990463. The cubic root of 18897341 is about 266.3587082081.

The spelling of 18897341 in words is "eighteen million, eight hundred ninety-seven thousand, three hundred forty-one".