18361876019 has 2 divisors, whose sum is σ = 18361876020. Its totient is φ = 18361876018.

The previous prime is 18361876007. The next prime is 18361876079. The reversal of 18361876019 is 91067816381.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18361876019 is a prime.

It is a super-2 number, since 2×18361876019² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (18361876079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9180938009 + 9180938010.

It is an arithmetic number, because the mean of its divisors is an integer number (9180938010).

Almost surely, 2^18361876019 is an apocalyptic number.

18361876019 is a deficient number, since it is larger than the sum of its proper divisors (1).

18361876019 is an equidigital number, since it uses as much as digits as its factorization.

18361876019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 435456, while the sum is 50.

The spelling of 18361876019 in words is "eighteen billion, three hundred sixty-one million, eight hundred seventy-six thousand, nineteen".