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18133812348 = 22317127699931
BaseRepresentation
bin10000111000110111…
…000000010001111100
31201210202222010001120
4100320313000101330
5244114223443343
612155222310540
71211241601401
oct207067002174
951722863046
1018133812348
117766078683
123620b88450
13192cb823a2
14c405002a8
15711edb683
hex438dc047c

18133812348 has 48 divisors (see below), whose sum is σ = 45154013184. Its totient is φ = 5644235520.

The previous prime is 18133812313. The next prime is 18133812349. The reversal of 18133812348 is 84321833181.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18133812349) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 324058 + ... + 375873.

It is an arithmetic number, because the mean of its divisors is an integer number (940708608).

Almost surely, 218133812348 is an apocalyptic number.

It is an amenable number.

18133812348 is an abundant number, since it is smaller than the sum of its proper divisors (27020200836).

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

18133812348 is a wasteful number, since it uses less digits than its factorization.

18133812348 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 700082 (or 700080 counting only the distinct ones).

The product of its digits is 110592, while the sum is 42.

The spelling of 18133812348 in words is "eighteen billion, one hundred thirty-three million, eight hundred twelve thousand, three hundred forty-eight".

Divisors: 1 2 3 4 6 12 17 34 51 68 102 127 204 254 381 508 762 1524 2159 4318 6477 8636 12954 25908 699931 1399862 2099793 2799724 4199586 8399172 11898827 23797654 35696481 47595308 71392962 88891237 142785924 177782474 266673711 355564948 533347422 1066694844 1511151029 3022302058 4533453087 6044604116 9066906174 18133812348