18013876403 has 2 divisors, whose sum is σ = 18013876404. Its totient is φ = 18013876402.

The previous prime is 18013876339. The next prime is 18013876429. The reversal of 18013876403 is 30467831081.

It is a strong prime.

It is an emirp because it is prime and its reverse (30467831081) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18013876403 - 2⁶ = 18013876339 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (18013876453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9006938201 + 9006938202.

It is an arithmetic number, because the mean of its divisors is an integer number (9006938202).

Almost surely, 2^18013876403 is an apocalyptic number.

18013876403 is a deficient number, since it is larger than the sum of its proper divisors (1).

18013876403 is an equidigital number, since it uses as much as digits as its factorization.

18013876403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96768, while the sum is 41.

The spelling of 18013876403 in words is "eighteen billion, thirteen million, eight hundred seventy-six thousand, four hundred three".