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18102343470 = 2351741346589
BaseRepresentation
bin10000110110111110…
…111101011100101110
31201201120202022212120
4100312332331130232
5244033144442340
612152140013410
71210410244401
oct206676753456
951646668776
1018102343470
11774a334642
123612531266
1319264b4953
14c3a26bd38
1570e3724d0
hex436fbd72e

18102343470 has 32 divisors (see below), whose sum is σ = 43470704160. Its totient is φ = 4824504960.

The previous prime is 18102343463. The next prime is 18102343481. The reversal of 18102343470 is 7434320181.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 121065 + ... + 225524.

It is an arithmetic number, because the mean of its divisors is an integer number (1358459505).

Almost surely, 218102343470 is an apocalyptic number.

18102343470 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18102343470 is an abundant number, since it is smaller than the sum of its proper divisors (25368360690).

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

18102343470 is a wasteful number, since it uses less digits than its factorization.

18102343470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 348340.

The product of its (nonzero) digits is 16128, while the sum is 33.

The spelling of 18102343470 in words is "eighteen billion, one hundred two million, three hundred forty-three thousand, four hundred seventy".

Divisors: 1 2 3 5 6 10 15 30 1741 3482 5223 8705 10446 17410 26115 52230 346589 693178 1039767 1732945 2079534 3465890 5198835 10397670 603411449 1206822898 1810234347 3017057245 3620468694 6034114490 9051171735 18102343470