18701012107 has 2 divisors, whose sum is σ = 18701012108. Its totient is φ = 18701012106.

The previous prime is 18701012101. The next prime is 18701012119. The reversal of 18701012107 is 70121010781.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18701012107 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is not a weakly prime, because it can be changed into another prime (18701012101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9350506053 + 9350506054.

It is an arithmetic number, because the mean of its divisors is an integer number (9350506054).

Almost surely, 2^18701012107 is an apocalyptic number.

18701012107 is a deficient number, since it is larger than the sum of its proper divisors (1).

18701012107 is an equidigital number, since it uses as much as digits as its factorization.

18701012107 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 784, while the sum is 28.

Adding to 18701012107 its reverse (70121010781), we get a palindrome (88822022888).

The spelling of 18701012107 in words is "eighteen billion, seven hundred one million, twelve thousand, one hundred seven".