18654096401 has 4 divisors (see below), whose sum is σ = 19109074404. Its totient is φ = 18199118400.

The previous prime is 18654096389. The next prime is 18654096407. The reversal of 18654096401 is 10469045681.

It is a Cunningham number, because it is equal to 136580²+1.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10469045681 = 31 ⋅337711151.

It can be written as a sum of positive squares in 2 ways, for example, as 898800400 + 17755296001 = 29980^2 + 133249^2 .

It is a cyclic number.

It is not a de Polignac number, because 18654096401 - 2⁶ = 18654096337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18654096407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 227488940 + ... + 227489021.

It is an arithmetic number, because the mean of its divisors is an integer number (4777268601).

Almost surely, 2^18654096401 is an apocalyptic number.

It is an amenable number.

18654096401 is a deficient number, since it is larger than the sum of its proper divisors (454978003).

18654096401 is an equidigital number, since it uses as much as digits as its factorization.

18654096401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 454978002.

The product of its (nonzero) digits is 207360, while the sum is 44.

The spelling of 18654096401 in words is "eighteen billion, six hundred fifty-four million, ninety-six thousand, four hundred one".