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18868007741 = 1119317573847
BaseRepresentation
bin10001100100100111…
…101111001100111101
31210200221111002210112
4101210213233030331
5302120202221431
612400130515405
71235365263632
oct214447571475
953627432715
1018868007741
118002553530
1237a6a35b65
131a1900522b
14cadc1a189
157566b5c2b
hex4649ef33d

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".

Divisors: 1 11 19 31 209 341 589 757 3847 6479 8327 14383 23467 42317 73093 119257 158213 258137 445873 804023 1311827 2265883 2912179 4904603 24924713 32033969 55331401 90277549 608645411 993053039 1715273431 18868007741