18472204445 has 8 divisors (see below), whose sum is σ = 22249050840. Its totient is φ = 14722826560.

The previous prime is 18472204367. The next prime is 18472204447. The reversal of 18472204445 is 54440227481.

It can be written as a sum of positive squares in 4 ways, for example, as 100841764 + 18371362681 = 10042^2 + 135541^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 18472204445 - 2³² = 14177237149 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18472204447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6865646 + ... + 6868335.

It is an arithmetic number, because the mean of its divisors is an integer number (2781131355).

Almost surely, 2^18472204445 is an apocalyptic number.

It is an amenable number.

18472204445 is a deficient number, since it is larger than the sum of its proper divisors (3776846395).

18472204445 is a wasteful number, since it uses less digits than its factorization.

18472204445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13734255.

The product of its (nonzero) digits is 286720, while the sum is 41.

The spelling of 18472204445 in words is "eighteen billion, four hundred seventy-two million, two hundred four thousand, four hundred forty-five".