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18986672282 = 260715639763
BaseRepresentation
bin10001101011101100…
…011010000010011010
31211000012202212221112
4101223230122002122
5302341042003112
612420010140322
71241336023454
oct215354320232
954005685845
1018986672282
1180635329a6
12381a7216a2
131a37782336
14cc18a92d4
15761d05a22
hex46bb1a09a

18986672282 has 8 divisors (see below), whose sum is σ = 28526929536. Its totient is φ = 9477695772.

The previous prime is 18986672281. The next prime is 18986672311. The reversal of 18986672282 is 28227668981.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (18986672281) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7818668 + ... + 7821095.

It is an arithmetic number, because the mean of its divisors is an integer number (3565866192).

Almost surely, 218986672282 is an apocalyptic number.

18986672282 is a deficient number, since it is larger than the sum of its proper divisors (9540257254).

18986672282 is a wasteful number, since it uses less digits than its factorization.

18986672282 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15640372.

The product of its digits is 9289728, while the sum is 59.

The spelling of 18986672282 in words is "eighteen billion, nine hundred eighty-six million, six hundred seventy-two thousand, two hundred eighty-two".

Divisors: 1 2 607 1214 15639763 31279526 9493336141 18986672282