18605707 has 2 divisors, whose sum is σ = 18605708. Its totient is φ = 18605706.

The previous prime is 18605663. The next prime is 18605711. The reversal of 18605707 is 70750681.

It is a strong prime.

It is an emirp because it is prime and its reverse (70750681) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18605707 is a prime.

It is not a weakly prime, because it can be changed into another prime (18605737) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9302853 + 9302854.

It is an arithmetic number, because the mean of its divisors is an integer number (9302854).

Almost surely, 2^18605707 is an apocalyptic number.

18605707 is a deficient number, since it is larger than the sum of its proper divisors (1).

18605707 is an equidigital number, since it uses as much as digits as its factorization.

18605707 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11760, while the sum is 34.

The square root of 18605707 is about 4313.4333192945. The cubic root of 18605707 is about 264.9814013291.

The spelling of 18605707 in words is "eighteen million, six hundred five thousand, seven hundred seven".