18468810001 has 2 divisors, whose sum is σ = 18468810002. Its totient is φ = 18468810000.

The previous prime is 18468809969. The next prime is 18468810023. The reversal of 18468810001 is 10001886481.

It is a Cunningham number, because it is equal to 135900²+1.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18468810000 + 1 = 135900^2 + 1^2 .

It is an emirp because it is prime and its reverse (10001886481) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18468810001 - 2⁵ = 18468809969 is a prime.

It is not a weakly prime, because it can be changed into another prime (18468810091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9234405000 + 9234405001.

It is an arithmetic number, because the mean of its divisors is an integer number (9234405001).

Almost surely, 2^18468810001 is an apocalyptic number.

It is an amenable number.

18468810001 is a deficient number, since it is larger than the sum of its proper divisors (1).

18468810001 is an equidigital number, since it uses as much as digits as its factorization.

18468810001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12288, while the sum is 37.

The spelling of 18468810001 in words is "eighteen billion, four hundred sixty-eight million, eight hundred ten thousand, one".