18801243107 has 2 divisors, whose sum is σ = 18801243108. Its totient is φ = 18801243106.

The previous prime is 18801243091. The next prime is 18801243133. The reversal of 18801243107 is 70134210881.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18801243107 - 2⁴ = 18801243091 is a prime.

It is not a weakly prime, because it can be changed into another prime (18801243157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9400621553 + 9400621554.

It is an arithmetic number, because the mean of its divisors is an integer number (9400621554).

Almost surely, 2^18801243107 is an apocalyptic number.

18801243107 is a deficient number, since it is larger than the sum of its proper divisors (1).

18801243107 is an equidigital number, since it uses as much as digits as its factorization.

18801243107 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10752, while the sum is 35.

Adding to 18801243107 its reverse (70134210881), we get a palindrome (88935453988).

The spelling of 18801243107 in words is "eighteen billion, eight hundred one million, two hundred forty-three thousand, one hundred seven".