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18082487982 = 2313231826769
BaseRepresentation
bin10000110101110011…
…001101111010101110
31201200012101120021010
4100311303031322232
5244013104103412
612150150250050
71210046416566
oct206563157256
951605346233
1018082487982
11773a102949
123607956926
131922352240
14c3777dda6
1570c74e33c
hex435ccdeae

18082487982 has 16 divisors (see below), whose sum is σ = 38946897360. Its totient is φ = 5563842432.

The previous prime is 18082487923. The next prime is 18082487993. The reversal of 18082487982 is 28978428081.

It is a congruent number.

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, 115913307 + ... + 115913462.

It is an arithmetic number, because the mean of its divisors is an integer number (2434181085).

Almost surely, 218082487982 is an apocalyptic number.

18082487982 is an abundant number, since it is smaller than the sum of its proper divisors (20864409378).

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

18082487982 is a wasteful number, since it uses less digits than its factorization.

18082487982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231826787.

The product of its (nonzero) digits is 4128768, while the sum is 57.

The spelling of 18082487982 in words is "eighteen billion, eighty-two million, four hundred eighty-seven thousand, nine hundred eighty-two".

Divisors: 1 2 3 6 13 26 39 78 231826769 463653538 695480307 1390960614 3013747997 6027495994 9041243991 18082487982