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18348887054 = 2232393594649
BaseRepresentation
bin10001000101101011…
…011100110000001110
31202100202200001002102
4101011223130300032
5300034303341204
612232424155102
71216462652351
oct210553346016
952322601072
1018348887054
117866517473
123681008a92
1319655b7024
14c60cc8298
15725d2241e
hex445adcc0e

18348887054 has 32 divisors (see below), whose sum is σ = 28926720000. Its totient is φ = 8712620224.

The previous prime is 18348887009. The next prime is 18348887069. The reversal of 18348887054 is 45078884381.

It is a super-2 number, since 2×183488870542 (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3944522 + ... + 3949170.

It is an arithmetic number, because the mean of its divisors is an integer number (903960000).

Almost surely, 218348887054 is an apocalyptic number.

18348887054 is a deficient number, since it is larger than the sum of its proper divisors (10577832946).

18348887054 is a wasteful number, since it uses less digits than its factorization.

18348887054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5272.

The product of its (nonzero) digits is 6881280, while the sum is 56.

It can be divided in two parts, 1834 and 8887054, that added together give a palindrome (8888888).

The spelling of 18348887054 in words is "eighteen billion, three hundred forty-eight million, eight hundred eighty-seven thousand, fifty-four".

Divisors: 1 2 23 46 239 359 478 718 4649 5497 8257 9298 10994 16514 85801 106927 171602 213854 1111111 1668991 1973423 2222222 3337982 3946846 25555553 38386793 51111106 76773586 398888849 797777698 9174443527 18348887054