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18490360116 = 22315114337121
BaseRepresentation
bin10001001110000111…
…001000000100110100
31202201121212121122110
4101032013020010310
5300332013010431
612254440331020
71223131316304
oct211607100464
952647777573
1018490360116
117929365258
123700473a70
1319889bb9b7
14c759d3604
1573346a346
hex44e1c8134

18490360116 has 48 divisors (see below), whose sum is σ = 43466306688. Its totient is φ = 6117504000.

The previous prime is 18490360111. The next prime is 18490360117. The reversal of 18490360116 is 61106309481.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18490360111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2593036 + ... + 2600156.

It is an arithmetic number, because the mean of its divisors is an integer number (905548056).

Almost surely, 218490360116 is an apocalyptic number.

It is an amenable number.

18490360116 is an abundant number, since it is smaller than the sum of its proper divisors (24975946572).

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

18490360116 is a wasteful number, since it uses less digits than its factorization.

18490360116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8712 (or 8710 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 39.

Adding to 18490360116 its reverse (61106309481), we get a palindrome (79596669597).

The spelling of 18490360116 in words is "eighteen billion, four hundred ninety million, three hundred sixty thousand, one hundred sixteen".

Divisors: 1 2 3 4 6 12 151 302 453 604 906 1433 1812 2866 4299 5732 7121 8598 14242 17196 21363 28484 42726 85452 216383 432766 649149 865532 1075271 1298298 2150542 2596596 3225813 4301084 6451626 10204393 12903252 20408786 30613179 40817572 61226358 122452716 1540863343 3081726686 4622590029 6163453372 9245180058 18490360116