18706007 has 2 divisors, whose sum is σ = 18706008. Its totient is φ = 18706006.

The previous prime is 18706003. The next prime is 18706027. The reversal of 18706007 is 70060781.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18706007 - 2² = 18706003 is a prime.

It is equal to p_1193474 and since 18706007 and 1193474 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18706003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9353003 + 9353004.

It is an arithmetic number, because the mean of its divisors is an integer number (9353004).

Almost surely, 2^18706007 is an apocalyptic number.

18706007 is a deficient number, since it is larger than the sum of its proper divisors (1).

18706007 is an equidigital number, since it uses as much as digits as its factorization.

18706007 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2352, while the sum is 29.

The square root of 18706007 is about 4325.0441616242. The cubic root of 18706007 is about 265.4567038562.

Adding to 18706007 its reverse (70060781), we get a palindrome (88766788).

The spelling of 18706007 in words is "eighteen million, seven hundred six thousand, seven".