Base | Representation |
---|---|
bin | 10001100100100111… |
… | …101111001100111101 |
3 | 1210200221111002210112 |
4 | 101210213233030331 |
5 | 302120202221431 |
6 | 12400130515405 |
7 | 1235365263632 |
oct | 214447571475 |
9 | 53627432715 |
10 | 18868007741 |
11 | 8002553530 |
12 | 37a6a35b65 |
13 | 1a1900522b |
14 | cadc1a189 |
15 | 7566b5c2b |
hex | 4649ef33d |
18868007741 has 32 divisors (see below), whose sum is σ = 22400901120. Its totient is φ = 15700910400.
The previous prime is 18868007737. The next prime is 18868007773. The reversal of 18868007741 is 14770086881.
It is a cyclic number.
It is not a de Polignac number, because 18868007741 - 22 = 18868007737 is a prime.
It is a super-2 number, since 2×188680077412 (a number of 21 digits) contains 22 as substring.
It is a Duffinian number.
It is a self number, because there is not a number n which added to its sum of digits gives 18868007741.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (18868000741) by changing a digit.
It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4902680 + ... + 4906526.
It is an arithmetic number, because the mean of its divisors is an integer number (700028160).
Almost surely, 218868007741 is an apocalyptic number.
18868007741 is a gapful number since it is divisible by the number (11) formed by its first and last digit.
It is an amenable number.
18868007741 is a deficient number, since it is larger than the sum of its proper divisors (3532893379).
18868007741 is a wasteful number, since it uses less digits than its factorization.
18868007741 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 4665.
The product of its (nonzero) digits is 602112, while the sum is 50.
The spelling of 18868007741 in words is "eighteen billion, eight hundred sixty-eight million, seven thousand, seven hundred forty-one".
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