18793349 has 2 divisors, whose sum is σ = 18793350. Its totient is φ = 18793348.

The previous prime is 18793331. The next prime is 18793351. The reversal of 18793349 is 94339781.

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., 18645124 + 148225 = 4318^2 + 385^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18793349 is a prime.

Together with 18793351, 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 (18793319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9396674 + 9396675.

It is an arithmetic number, because the mean of its divisors is an integer number (9396675).

Almost surely, 2^18793349 is an apocalyptic number.

It is an amenable number.

18793349 is a deficient number, since it is larger than the sum of its proper divisors (1).

18793349 is an equidigital number, since it uses as much as digits as its factorization.

18793349 is an evil number, because the sum of its binary digits is even.

The product of its digits is 163296, while the sum is 44.

The square root of 18793349 is about 4335.1296405067. The cubic root of 18793349 is about 265.8692188812.

The spelling of 18793349 in words is "eighteen million, seven hundred ninety-three thousand, three hundred forty-nine".