18671052019 has 2 divisors, whose sum is σ = 18671052020. Its totient is φ = 18671052018.

The previous prime is 18671051983. The next prime is 18671052089. The reversal of 18671052019 is 91025017681.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18671052019 - 2¹³ = 18671043827 is a prime.

It is a super-2 number, since 2×18671052019² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (18671052089) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9335526009 + 9335526010.

It is an arithmetic number, because the mean of its divisors is an integer number (9335526010).

Almost surely, 2^18671052019 is an apocalyptic number.

18671052019 is a deficient number, since it is larger than the sum of its proper divisors (1).

18671052019 is an equidigital number, since it uses as much as digits as its factorization.

18671052019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30240, while the sum is 40.

The spelling of 18671052019 in words is "eighteen billion, six hundred seventy-one million, fifty-two thousand, nineteen".