18680907 has 12 divisors (see below), whose sum is σ = 28974696. Its totient is φ = 10674720.

The previous prime is 18680897. The next prime is 18680911. The reversal of 18680907 is 70908681.

It is not a de Polignac number, because 18680907 - 2⁴ = 18680891 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18680927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 63394 + ... + 63687.

It is an arithmetic number, because the mean of its divisors is an integer number (2414558).

Almost surely, 2^18680907 is an apocalyptic number.

18680907 is a deficient number, since it is larger than the sum of its proper divisors (10293789).

18680907 is a wasteful number, since it uses less digits than its factorization.

18680907 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127098 (or 127091 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 39.

The square root of 18680907 is about 4322.1414831077. The cubic root of 18680907 is about 265.3379194528.

The spelling of 18680907 in words is "eighteen million, six hundred eighty thousand, nine hundred seven".