18748207 has 2 divisors, whose sum is σ = 18748208. Its totient is φ = 18748206.

The previous prime is 18748199. The next prime is 18748241. The reversal of 18748207 is 70284781.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18748207 - 2³ = 18748199 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 (18748277) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9374103 + 9374104.

It is an arithmetic number, because the mean of its divisors is an integer number (9374104).

Almost surely, 2^18748207 is an apocalyptic number.

18748207 is a deficient number, since it is larger than the sum of its proper divisors (1).

18748207 is an equidigital number, since it uses as much as digits as its factorization.

18748207 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25088, while the sum is 37.

The square root of 18748207 is about 4329.9199761658. The cubic root of 18748207 is about 265.6561738176.

It can be divided in two parts, 18 and 748207, that added together give a square (748225 = 865²).

The spelling of 18748207 in words is "eighteen million, seven hundred forty-eight thousand, two hundred seven".