18087035801 has 2 divisors, whose sum is σ = 18087035802. Its totient is φ = 18087035800.

The previous prime is 18087035741. The next prime is 18087035809. The reversal of 18087035801 is 10853078081.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17662675801 + 424360000 = 132901^2 + 20600^2 .

It is an emirp because it is prime and its reverse (10853078081) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18087035801 - 2¹⁴ = 18087019417 is a prime.

It is not a weakly prime, because it can be changed into another prime (18087035809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9043517900 + 9043517901.

It is an arithmetic number, because the mean of its divisors is an integer number (9043517901).

Almost surely, 2^18087035801 is an apocalyptic number.

It is an amenable number.

18087035801 is a deficient number, since it is larger than the sum of its proper divisors (1).

18087035801 is an equidigital number, since it uses as much as digits as its factorization.

18087035801 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 53760, while the sum is 41.

The spelling of 18087035801 in words is "eighteen billion, eighty-seven million, thirty-five thousand, eight hundred one".