18485297 has 2 divisors, whose sum is σ = 18485298. Its totient is φ = 18485296.

The previous prime is 18485293. The next prime is 18485303. The reversal of 18485297 is 79258481.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18181696 + 303601 = 4264^2 + 551^2 .

It is a cyclic number.

It is not a de Polignac number, because 18485297 - 2² = 18485293 is a prime.

It is not a weakly prime, because it can be changed into another prime (18485293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9242648 + 9242649.

It is an arithmetic number, because the mean of its divisors is an integer number (9242649).

Almost surely, 2^18485297 is an apocalyptic number.

It is an amenable number.

18485297 is a deficient number, since it is larger than the sum of its proper divisors (1).

18485297 is an equidigital number, since it uses as much as digits as its factorization.

18485297 is an evil number, because the sum of its binary digits is even.

The product of its digits is 161280, while the sum is 44.

The square root of 18485297 is about 4299.4531047565. The cubic root of 18485297 is about 264.4085396738.

The spelling of 18485297 in words is "eighteen million, four hundred eighty-five thousand, two hundred ninety-seven".