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18182810944 = 26284106421
BaseRepresentation
bin10000111011110001…
…111010110101000000
31201221012011111111101
4100323301322311000
5244214244422234
612204132424144
71212405225424
oct207361726500
951835144441
1018182810944
1177907a4a91
123635478054
13193a079a3c
14c46c16b84
15716469814
hex43bc7ad40

18182810944 has 14 divisors (see below), whose sum is σ = 36081515594. Its totient is φ = 9091405440.

The previous prime is 18182810941. The next prime is 18182810953. The reversal of 18182810944 is 44901828181.

It can be written as a sum of positive squares in only one way, i.e., 13326393600 + 4856417344 = 115440^2 + 69688^2 .

It is a super-2 number, since 2×181828109442 (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 18182810894 and 18182810903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18182810941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 142053147 + ... + 142053274.

Almost surely, 218182810944 is an apocalyptic number.

It is an amenable number.

18182810944 is a deficient number, since it is larger than the sum of its proper divisors (17898704650).

18182810944 is an equidigital number, since it uses as much as digits as its factorization.

18182810944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284106433 (or 284106423 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 46.

The spelling of 18182810944 in words is "eighteen billion, one hundred eighty-two million, eight hundred ten thousand, nine hundred forty-four".

Divisors: 1 2 4 8 16 32 64 284106421 568212842 1136425684 2272851368 4545702736 9091405472 18182810944