18944055607 has 8 divisors (see below), whose sum is σ = 19138608432. Its totient is φ = 18749640000.

The previous prime is 18944055589. The next prime is 18944055631. The reversal of 18944055607 is 70655044981.

It is a happy number.

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

It is not a de Polignac number, because 18944055607 - 2³¹ = 16796571959 is a prime.

It is a super-3 number, since 3×18944055607³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18944055707) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 255732 + ... + 321382.

It is an arithmetic number, because the mean of its divisors is an integer number (2392326054).

Almost surely, 2^18944055607 is an apocalyptic number.

18944055607 is a deficient number, since it is larger than the sum of its proper divisors (194552825).

18944055607 is a wasteful number, since it uses less digits than its factorization.

18944055607 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68609.

The product of its (nonzero) digits is 1209600, while the sum is 49.

The spelling of 18944055607 in words is "eighteen billion, nine hundred forty-four million, fifty-five thousand, six hundred seven".