18102012043 has 2 divisors, whose sum is σ = 18102012044. Its totient is φ = 18102012042.

The previous prime is 18102012031. The next prime is 18102012079. The reversal of 18102012043 is 34021020181.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (34021020181) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18102012043 - 2¹⁷ = 18101880971 is a prime.

It is not a weakly prime, because it can be changed into another prime (18102018043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9051006021 + 9051006022.

It is an arithmetic number, because the mean of its divisors is an integer number (9051006022).

Almost surely, 2^18102012043 is an apocalyptic number.

18102012043 is a deficient number, since it is larger than the sum of its proper divisors (1).

18102012043 is an equidigital number, since it uses as much as digits as its factorization.

18102012043 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 384, while the sum is 22.

The spelling of 18102012043 in words is "eighteen billion, one hundred two million, twelve thousand, forty-three".