18944900425476 has 81 divisors (see below), whose sum is σ = 48364816200519. Its totient is φ = 6252768526032.

The previous prime is 18944900425471. The next prime is 18944900425609. The reversal of 18944900425476 is 67452400944981.

The square root of 18944900425476 is 4352574.

It is a perfect power (a square), and thus also a powerful number.

18944900425476 is a `hidden beast` number, since 1 + 8 + 9 + 4 + 49 + 0 + 0 + 42 + 547 + 6 = 666.

It is not an unprimeable number, because it can be changed into a prime (18944900425471) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 2689887211 + ... + 2689894253.

Almost surely, 2^{18944900425476} is an apocalyptic number.

18944900425476 is the 4352574-th square number.

It is an amenable number.

18944900425476 is an abundant number, since it is smaller than the sum of its proper divisors (29419915775043).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18944900425476 is an frugal number, since it uses more digits than its factorization.

18944900425476 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14302 (or 7151 counting only the distinct ones).

The product of its (nonzero) digits is 69672960, while the sum is 63.

The spelling of 18944900425476 in words is "eighteen trillion, nine hundred forty-four billion, nine hundred million, four hundred twenty-five thousand, four hundred seventy-six".