18698107 has 2 divisors, whose sum is σ = 18698108. Its totient is φ = 18698106.

The previous prime is 18698089. The next prime is 18698131. The reversal of 18698107 is 70189681.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18698107 - 2¹¹ = 18696059 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18698107.

It is not a weakly prime, because it can be changed into another prime (18698137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9349053 + 9349054.

It is an arithmetic number, because the mean of its divisors is an integer number (9349054).

Almost surely, 2^18698107 is an apocalyptic number.

18698107 is a deficient number, since it is larger than the sum of its proper divisors (1).

18698107 is an equidigital number, since it uses as much as digits as its factorization.

18698107 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24192, while the sum is 40.

The square root of 18698107 is about 4324.1307797059. The cubic root of 18698107 is about 265.4193289949.

The spelling of 18698107 in words is "eighteen million, six hundred ninety-eight thousand, one hundred seven".