18298361 has 2 divisors, whose sum is σ = 18298362. Its totient is φ = 18298360.

The previous prime is 18298327. The next prime is 18298393. The reversal of 18298361 is 16389281.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10118761 + 8179600 = 3181^2 + 2860^2 .

It is a cyclic number.

It is not a de Polignac number, because 18298361 - 2⁶ = 18298297 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (18298661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9149180 + 9149181.

It is an arithmetic number, because the mean of its divisors is an integer number (9149181).

Almost surely, 2^18298361 is an apocalyptic number.

It is an amenable number.

18298361 is a deficient number, since it is larger than the sum of its proper divisors (1).

18298361 is an equidigital number, since it uses as much as digits as its factorization.

18298361 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20736, while the sum is 38.

The square root of 18298361 is about 4277.6583547544. The cubic root of 18298361 is about 263.5142247301.

The spelling of 18298361 in words is "eighteen million, two hundred ninety-eight thousand, three hundred sixty-one".