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18206613374 = 213196901673
BaseRepresentation
bin10000111101001100…
…101101111101111110
31201222211221210021212
4100331030231331332
5244241343111444
612210342524422
71213114442315
oct207514557576
951884853255
1018206613374
1177a3182114
123641436712
131941c91b11
14c4a05127c
157185bc19e
hex43d32df7e

18206613374 has 8 divisors (see below), whose sum is σ = 27330629040. Its totient is φ = 9096403696.

The previous prime is 18206613367. The next prime is 18206613377. The reversal of 18206613374 is 47331660281.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18206613377) 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, 3448199 + ... + 3453474.

It is an arithmetic number, because the mean of its divisors is an integer number (3416328630).

Almost surely, 218206613374 is an apocalyptic number.

18206613374 is a deficient number, since it is larger than the sum of its proper divisors (9124015666).

18206613374 is a wasteful number, since it uses less digits than its factorization.

18206613374 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6902994.

The product of its (nonzero) digits is 145152, while the sum is 41.

The spelling of 18206613374 in words is "eighteen billion, two hundred six million, six hundred thirteen thousand, three hundred seventy-four".

Divisors: 1 2 1319 2638 6901673 13803346 9103306687 18206613374