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18286354679 = 314437571759
BaseRepresentation
bin10001000001111100…
…111010000011110111
31202012102000001210112
4101001330322003313
5244422301322204
612222312013235
71215103310255
oct210174720367
952172001715
1018286354679
117834196a1a
12366409121b
131955661518
14c5688b5d5
157205be26e
hex441f3a0f7

18286354679 has 16 divisors (see below), whose sum is σ = 18954608640. Its totient is φ = 17623176480.

The previous prime is 18286354663. The next prime is 18286354687. The reversal of 18286354679 is 97645368281.

It is a cyclic number.

It is not a de Polignac number, because 18286354679 - 24 = 18286354663 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18286354649) 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, 10395002 + ... + 10396760.

It is an arithmetic number, because the mean of its divisors is an integer number (1184663040).

Almost surely, 218286354679 is an apocalyptic number.

18286354679 is a deficient number, since it is larger than the sum of its proper divisors (668253961).

18286354679 is a wasteful number, since it uses less digits than its factorization.

18286354679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2990.

The product of its digits is 17418240, while the sum is 59.

The spelling of 18286354679 in words is "eighteen billion, two hundred eighty-six million, three hundred fifty-four thousand, six hundred seventy-nine".

Divisors: 1 31 443 757 1759 13733 23467 54529 335351 779237 1331563 10395881 24156347 41278453 589882409 18286354679