18756948851 has 2 divisors, whose sum is σ = 18756948852. Its totient is φ = 18756948850.

The previous prime is 18756948841. The next prime is 18756948863. The reversal of 18756948851 is 15884965781.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18756948851 - 2³⁰ = 17683207027 is a prime.

It is not a weakly prime, because it can be changed into another prime (18756948841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9378474425 + 9378474426.

It is an arithmetic number, because the mean of its divisors is an integer number (9378474426).

Almost surely, 2^18756948851 is an apocalyptic number.

18756948851 is a deficient number, since it is larger than the sum of its proper divisors (1).

18756948851 is an equidigital number, since it uses as much as digits as its factorization.

18756948851 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 19353600, while the sum is 62.

The spelling of 18756948851 in words is "eighteen billion, seven hundred fifty-six million, nine hundred forty-eight thousand, eight hundred fifty-one".