18891083063 has 2 divisors, whose sum is σ = 18891083064. Its totient is φ = 18891083062.

The previous prime is 18891083041. The next prime is 18891083069. The reversal of 18891083063 is 36038019881.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18891083063 - 2¹² = 18891078967 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 18891082999 and 18891083017.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18891083069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9445541531 + 9445541532.

It is an arithmetic number, because the mean of its divisors is an integer number (9445541532).

Almost surely, 2^18891083063 is an apocalyptic number.

18891083063 is a deficient number, since it is larger than the sum of its proper divisors (1).

18891083063 is an equidigital number, since it uses as much as digits as its factorization.

18891083063 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 248832, while the sum is 47.

The spelling of 18891083063 in words is "eighteen billion, eight hundred ninety-one million, eighty-three thousand, sixty-three".