18853918272 has 672 divisors, whose sum is σ = 71209082880. Its totient is φ = 4638228480.

The previous prime is 18853918267. The next prime is 18853918273. The reversal of 18853918272 is 27281935881.

18853918272 is a `hidden beast` number, since 1 + 88 + 539 + 1 + 8 + 27 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (672).

It is not an unprimeable number, because it can be changed into a prime (18853918273) 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 95 ways as a sum of consecutive naturals, for example, 40372183 + ... + 40372649.

Almost surely, 2^18853918272 is an apocalyptic number.

18853918272 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18853918272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35604541440).

18853918272 is an abundant number, since it is smaller than the sum of its proper divisors (52355164608).

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

18853918272 is a wasteful number, since it uses less digits than its factorization.

18853918272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 559 (or 546 counting only the distinct ones).

The product of its digits is 1935360, while the sum is 54.

The spelling of 18853918272 in words is "eighteen billion, eight hundred fifty-three million, nine hundred eighteen thousand, two hundred seventy-two".