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18007999083 = 331740138329
BaseRepresentation
bin10000110001010111…
…000100001001101011
31201111000020010201000
4100301113010021223
5243340021432313
612134525530043
71205153316024
oct206127041153
951430203630
1018007999083
117701056278
1235a6a13923
13190caa1479
14c2b90dc4b
15705e38673
hex4315c426b

18007999083 has 16 divisors (see below), whose sum is σ = 26680746400. Its totient is φ = 12004329600.

The previous prime is 18007999069. The next prime is 18007999117. The reversal of 18007999083 is 38099970081.

It is not a de Polignac number, because 18007999083 - 218 = 18007736939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18007999033) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 450663 + ... + 488991.

It is an arithmetic number, because the mean of its divisors is an integer number (1667546650).

Almost surely, 218007999083 is an apocalyptic number.

18007999083 is a deficient number, since it is larger than the sum of its proper divisors (8672747317).

18007999083 is a wasteful number, since it uses less digits than its factorization.

18007999083 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55739 (or 55733 counting only the distinct ones).

The product of its (nonzero) digits is 979776, while the sum is 54.

The spelling of 18007999083 in words is "eighteen billion, seven million, nine hundred ninety-nine thousand, eighty-three".

Divisors: 1 3 9 27 17401 38329 52203 114987 156609 344961 469827 1034883 666962929 2000888787 6002666361 18007999083