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1318488071 = 1985381353
BaseRepresentation
bin100111010010110…
…1000100000000111
310101212222010121112
41032211220200013
510200013104241
6334455435235
744446651355
oct11645504007
93355863545
101318488071
1161728566a
12309685b1b
1318020c174
14c71747d5
157ab431eb
hex4e968807

1318488071 has 8 divisors (see below), whose sum is σ = 1389526320. Its totient is φ = 1247614272.

The previous prime is 1318488043. The next prime is 1318488077. The reversal of 1318488071 is 1708848131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1318488071 - 210 = 1318487047 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1318488077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24470 + ... + 56883.

It is an arithmetic number, because the mean of its divisors is an integer number (173690790).

Almost surely, 21318488071 is an apocalyptic number.

1318488071 is a deficient number, since it is larger than the sum of its proper divisors (71038249).

1318488071 is an equidigital number, since it uses as much as digits as its factorization.

1318488071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82225.

The product of its (nonzero) digits is 43008, while the sum is 41.

The square root of 1318488071 is about 36310.9910495431. The cubic root of 1318488071 is about 1096.5423303737.

The spelling of 1318488071 in words is "one billion, three hundred eighteen million, four hundred eighty-eight thousand, seventy-one".

Divisors: 1 19 853 16207 81353 1545707 69394109 1318488071