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18130050784 = 254313175909
BaseRepresentation
bin10000111000101000…
…101001111011100000
31201210111220000011101
4100320220221323200
5244112243111114
612155005524144
71211164613626
oct207050517340
951714800141
1018130050784
117763a3954a
12361b873654
13192c166201
14c3dc01516
157119e6d74
hex438a29ee0

18130050784 has 24 divisors (see below), whose sum is σ = 36523622520. Its totient is φ = 8854210176.

The previous prime is 18130050779. The next prime is 18130050793. The reversal of 18130050784 is 48705003181.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6586579 + ... + 6589330.

It is an arithmetic number, because the mean of its divisors is an integer number (1521817605).

Almost surely, 218130050784 is an apocalyptic number.

It is an amenable number.

18130050784 is an abundant number, since it is smaller than the sum of its proper divisors (18393571736).

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

18130050784 is a wasteful number, since it uses less digits than its factorization.

18130050784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13175962 (or 13175954 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 37.

The spelling of 18130050784 in words is "eighteen billion, one hundred thirty million, fifty thousand, seven hundred eighty-four".

Divisors: 1 2 4 8 16 32 43 86 172 344 688 1376 13175909 26351818 52703636 105407272 210814544 421629088 566564087 1133128174 2266256348 4532512696 9065025392 18130050784