18969386363 has 2 divisors, whose sum is σ = 18969386364. Its totient is φ = 18969386362.

The previous prime is 18969386351. The next prime is 18969386453. The reversal of 18969386363 is 36368396981.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18969386363 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 18969386296 and 18969386305.

It is not a weakly prime, because it can be changed into another prime (18969386563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9484693181 + 9484693182.

It is an arithmetic number, because the mean of its divisors is an integer number (9484693182).

Almost surely, 2^18969386363 is an apocalyptic number.

18969386363 is a deficient number, since it is larger than the sum of its proper divisors (1).

18969386363 is an equidigital number, since it uses as much as digits as its factorization.

18969386363 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 30233088, while the sum is 62.

The spelling of 18969386363 in words is "eighteen billion, nine hundred sixty-nine million, three hundred eighty-six thousand, three hundred sixty-three".