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18848657030 = 257238466647
BaseRepresentation
bin10001100011011101…
…111010111010000110
31210122121001222121112
4101203131322322012
5302100224011110
612354200045022
71235041640600
oct214335727206
953577058545
1018848657030
117aa2637005
1237a0463772
131a14cbb4c8
14cab420170
15754b42405
hex46377ae86

18848657030 has 24 divisors (see below), whose sum is σ = 39466780848. Its totient is φ = 6462396528.

The previous prime is 18848656991. The next prime is 18848657041. The reversal of 18848657030 is 3075684881.

It is a self number, because there is not a number n which added to its sum of digits gives 18848657030.

It is a congruent number.

It is an unprimeable number.

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, 19232834 + ... + 19233813.

It is an arithmetic number, because the mean of its divisors is an integer number (1644449202).

Almost surely, 218848657030 is an apocalyptic number.

18848657030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18848657030 is an abundant number, since it is smaller than the sum of its proper divisors (20618123818).

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

18848657030 is a wasteful number, since it uses less digits than its factorization.

18848657030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38466668 (or 38466661 counting only the distinct ones).

The product of its (nonzero) digits is 1290240, while the sum is 50.

The spelling of 18848657030 in words is "eighteen billion, eight hundred forty-eight million, six hundred fifty-seven thousand, thirty".

Divisors: 1 2 5 7 10 14 35 49 70 98 245 490 38466647 76933294 192333235 269266529 384666470 538533058 1346332645 1884865703 2692665290 3769731406 9424328515 18848657030