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18313663301 = 37539338941
BaseRepresentation
bin10001000011100101…
…000101001101000101
31202021022101111011222
4101003211011031011
5300001244211201
612225125210125
71215554366243
oct210345051505
952238344158
1018313663301
11784864932a
123671260945
13195b20347b
14c5a359793
15722bb591b
hex443945345

18313663301 has 8 divisors (see below), whose sum is σ = 19163508984. Its totient is φ = 17482495680.

The previous prime is 18313663259. The next prime is 18313663331. The reversal of 18313663301 is 10336631381.

It can be written as a sum of positive squares in 4 ways, for example, as 5986890625 + 12326772676 = 77375^2 + 111026^2 .

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 18313663301 - 26 = 18313663237 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 (18313663331) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4667510 + ... + 4671431.

It is an arithmetic number, because the mean of its divisors is an integer number (2395438623).

Almost surely, 218313663301 is an apocalyptic number.

It is an amenable number.

18313663301 is a deficient number, since it is larger than the sum of its proper divisors (849845683).

18313663301 is an equidigital number, since it uses as much as digits as its factorization.

18313663301 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9339031.

The product of its (nonzero) digits is 23328, while the sum is 35.

The spelling of 18313663301 in words is "eighteen billion, three hundred thirteen million, six hundred sixty-three thousand, three hundred one".

Divisors: 1 37 53 1961 9338941 345540817 494963873 18313663301