18761858707 has 2 divisors, whose sum is σ = 18761858708. Its totient is φ = 18761858706.

The previous prime is 18761858683. The next prime is 18761858711. The reversal of 18761858707 is 70785816781.

It is a strong prime.

It is an emirp because it is prime and its reverse (70785816781) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18761858707 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 (18761858737) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9380929353 + 9380929354.

It is an arithmetic number, because the mean of its divisors is an integer number (9380929354).

Almost surely, 2^18761858707 is an apocalyptic number.

18761858707 is a deficient number, since it is larger than the sum of its proper divisors (1).

18761858707 is an equidigital number, since it uses as much as digits as its factorization.

18761858707 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5268480, while the sum is 58.

The spelling of 18761858707 in words is "eighteen billion, seven hundred sixty-one million, eight hundred fifty-eight thousand, seven hundred seven".