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18255408041 = 1329269317981
BaseRepresentation
bin10001000000000110…
…110110101110101001
31202010020202210222202
4101000012312232221
5244341341024131
612215244425545
71214246256653
oct210006665651
952106683882
1018255408041
11781877a292
1236558482b5
13194c1176c0
14c527136d3
1571ca09bcb
hex4401b6ba9

18255408041 has 16 divisors (see below), whose sum is σ = 20346273360. Its totient is φ = 16263125760.

The previous prime is 18255408023. The next prime is 18255408049. The reversal of 18255408041 is 14080455281.

It can be written as a sum of positive squares in 8 ways, for example, as 293779600 + 17961628441 = 17140^2 + 134021^2 .

It is not a de Polignac number, because 18255408041 - 218 = 18255145897 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18255407986 and 18255408004.

It is not an unprimeable number, because it can be changed into a prime (18255408049) 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, 1006271 + ... + 1024251.

It is an arithmetic number, because the mean of its divisors is an integer number (1271642085).

Almost surely, 218255408041 is an apocalyptic number.

It is an amenable number.

18255408041 is a deficient number, since it is larger than the sum of its proper divisors (2090865319).

18255408041 is a wasteful number, since it uses less digits than its factorization.

18255408041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20716.

The product of its (nonzero) digits is 51200, while the sum is 38.

The spelling of 18255408041 in words is "eighteen billion, two hundred fifty-five million, four hundred eight thousand, forty-one".

Divisors: 1 13 29 377 2693 17981 35009 78097 233753 521449 1015261 6778837 48422833 629496829 1404262157 18255408041