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18457854411 = 341931916103
BaseRepresentation
bin10001001100001011…
…001000000111001011
31202122100201011012110
4101030023020013023
5300300202320121
612251315513403
71222255113423
oct211413100713
952570634173
1018457854411
117911a83237
1236b15b8863
13198204a359
14c71571483
15730698d76
hex44c2c81cb

18457854411 has 16 divisors (see below), whose sum is σ = 25214999040. Its totient is φ = 12003074880.

The previous prime is 18457854409. The next prime is 18457854419. The reversal of 18457854411 is 11445875481.

It is not a de Polignac number, because 18457854411 - 21 = 18457854409 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18457854419) 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, 1138186 + ... + 1154288.

It is an arithmetic number, because the mean of its divisors is an integer number (1575937440).

Almost surely, 218457854411 is an apocalyptic number.

18457854411 is a deficient number, since it is larger than the sum of its proper divisors (6757144629).

18457854411 is a wasteful number, since it uses less digits than its factorization.

18457854411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25466.

The product of its digits is 716800, while the sum is 48.

The spelling of 18457854411 in words is "eighteen billion, four hundred fifty-seven million, eight hundred fifty-four thousand, four hundred eleven".

Divisors: 1 3 41 123 9319 16103 27957 48309 382079 660223 1146237 1980669 150063857 450191571 6152618137 18457854411