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18248905275 = 352243318737
BaseRepresentation
bin10000111111101110…
…000011001000111011
31202002210112102212120
4100333232003020323
5244333204432100
612214453212323
71214140064316
oct207756031073
952083472776
1018248905275
1178150386a7
1236536310a3
13194a97b903
14c518dd97d
1571c1730a0
hex43fb8323b

18248905275 has 12 divisors (see below), whose sum is σ = 30171523512. Its totient is φ = 9732749440.

The previous prime is 18248905237. The next prime is 18248905277. The reversal of 18248905275 is 57250984281.

It is not a de Polignac number, because 18248905275 - 210 = 18248904251 is a prime.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (18248905277) 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 11 ways as a sum of consecutive naturals, for example, 121659294 + ... + 121659443.

It is an arithmetic number, because the mean of its divisors is an integer number (2514293626).

Almost surely, 218248905275 is an apocalyptic number.

18248905275 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

18248905275 is a deficient number, since it is larger than the sum of its proper divisors (11922618237).

18248905275 is a wasteful number, since it uses less digits than its factorization.

18248905275 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 243318750 (or 243318745 counting only the distinct ones).

The product of its (nonzero) digits is 1612800, while the sum is 51.

The spelling of 18248905275 in words is "eighteen billion, two hundred forty-eight million, nine hundred five thousand, two hundred seventy-five".

Divisors: 1 3 5 15 25 75 243318737 729956211 1216593685 3649781055 6082968425 18248905275