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18341403087 = 3716724121701
BaseRepresentation
bin10001000101001110…
…111001100111001111
31202100020120211000110
4101011032321213033
5300030344344322
612231555531103
71216342232250
oct210516714717
952306524013
1018341403087
117862275677
12367a5b9a93
131963b96747
14c5dcdab27
15725344c0c
hex4453b99cf

18341403087 has 32 divisors (see below), whose sum is σ = 28234128384. Its totient is φ = 10374336000.

The previous prime is 18341403007. The next prime is 18341403103. The reversal of 18341403087 is 78030414381.

It is not a de Polignac number, because 18341403087 - 216 = 18341337551 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18341403007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 834337 + ... + 856037.

It is an arithmetic number, because the mean of its divisors is an integer number (882316512).

Almost surely, 218341403087 is an apocalyptic number.

18341403087 is a deficient number, since it is larger than the sum of its proper divisors (9892725297).

18341403087 is a wasteful number, since it uses less digits than its factorization.

18341403087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22119.

The product of its (nonzero) digits is 64512, while the sum is 39.

The spelling of 18341403087 in words is "eighteen billion, three hundred forty-one million, four hundred three thousand, eighty-seven".

Divisors: 1 3 7 21 167 241 501 723 1169 1687 3507 5061 21701 40247 65103 120741 151907 281729 455721 845187 3624067 5229941 10872201 15689823 25368469 36609587 76105407 109828761 873400147 2620200441 6113801029 18341403087