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18348367007 = 371129943889
BaseRepresentation
bin10001000101101001…
…011101110010011111
31202100201200121201102
4101011221131302133
5300034140221012
612232405103315
71216455355235
oct210551356237
952321617642
1018348367007
1178661a1783
1236809b7b3b
1319654643c9
14c60bd0955
15725c6d2c2
hex445a5dc9f

18348367007 has 8 divisors (see below), whose sum is σ = 18846366000. Its totient is φ = 17850478464.

The previous prime is 18348366991. The next prime is 18348367033. The reversal of 18348367007 is 70076384381.

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 18348367007 - 24 = 18348366991 is a prime.

It is a super-2 number, since 2×183483670072 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18348367207) 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 7 ways as a sum of consecutive naturals, for example, 396119 + ... + 440007.

It is an arithmetic number, because the mean of its divisors is an integer number (2355795750).

Almost surely, 218348367007 is an apocalyptic number.

18348367007 is a deficient number, since it is larger than the sum of its proper divisors (497998993).

18348367007 is a wasteful number, since it uses less digits than its factorization.

18348367007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55225.

The product of its (nonzero) digits is 677376, while the sum is 47.

The spelling of 18348367007 in words is "eighteen billion, three hundred forty-eight million, three hundred sixty-seven thousand, seven".

Divisors: 1 37 11299 43889 418063 1623893 495901811 18348367007