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18780094896 = 2432087187471
BaseRepresentation
bin10001011111011000…
…011000000110110000
31210110211001200001020
4101133120120012300
5301430201014041
612343310335440
71233250113153
oct213730300660
953424050036
1018780094896
117a67968292
1237814ba580
131a03a342b4
14ca2293c9a
1574daec866
hex45f6181b0

18780094896 has 40 divisors (see below), whose sum is σ = 48538750464. Its totient is φ = 6256998720.

The previous prime is 18780094867. The next prime is 18780094919. The reversal of 18780094896 is 69849008781.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6441 + ... + 193911.

Almost surely, 218780094896 is an apocalyptic number.

18780094896 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

18780094896 is an abundant number, since it is smaller than the sum of its proper divisors (29758655568).

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

18780094896 is a wasteful number, since it uses less digits than its factorization.

18780094896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189569 (or 189563 counting only the distinct ones).

The product of its (nonzero) digits is 6967296, while the sum is 60.

The spelling of 18780094896 in words is "eighteen billion, seven hundred eighty million, ninety-four thousand, eight hundred ninety-six".

Divisors: 1 2 3 4 6 8 12 16 24 48 2087 4174 6261 8348 12522 16696 25044 33392 50088 100176 187471 374942 562413 749884 1124826 1499768 2249652 2999536 4499304 8998608 391251977 782503954 1173755931 1565007908 2347511862 3130015816 4695023724 6260031632 9390047448 18780094896