18672107 has 2 divisors, whose sum is σ = 18672108. Its totient is φ = 18672106.

The previous prime is 18672053. The next prime is 18672109. The reversal of 18672107 is 70127681.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18672107 - 2¹² = 18668011 is a prime.

Together with 18672109, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (18672109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9336053 + 9336054.

It is an arithmetic number, because the mean of its divisors is an integer number (9336054).

Almost surely, 2^18672107 is an apocalyptic number.

18672107 is a deficient number, since it is larger than the sum of its proper divisors (1).

18672107 is an equidigital number, since it uses as much as digits as its factorization.

18672107 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4704, while the sum is 32.

The square root of 18672107 is about 4321.1233493155. The cubic root of 18672107 is about 265.2962487346.

Adding to 18672107 its reverse (70127681), we get a palindrome (88799788).

The spelling of 18672107 in words is "eighteen million, six hundred seventy-two thousand, one hundred seven".