18886083947 has 2 divisors, whose sum is σ = 18886083948. Its totient is φ = 18886083946.

The previous prime is 18886083907. The next prime is 18886084039. The reversal of 18886083947 is 74938068881.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18886083947 - 2¹⁰ = 18886082923 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18886083947.

It is not a weakly prime, because it can be changed into another prime (18886083907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9443041973 + 9443041974.

It is an arithmetic number, because the mean of its divisors is an integer number (9443041974).

Almost surely, 2^18886083947 is an apocalyptic number.

18886083947 is a deficient number, since it is larger than the sum of its proper divisors (1).

18886083947 is an equidigital number, since it uses as much as digits as its factorization.

18886083947 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18579456, while the sum is 62.

The spelling of 18886083947 in words is "eighteen billion, eight hundred eighty-six million, eighty-three thousand, nine hundred forty-seven".