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18112008937 = 1111031492789
BaseRepresentation
bin10000110111100011…
…110101001011101001
31201202020221101101211
4100313203311023221
5244043133241222
612153123113121
71210555351531
oct206743651351
951666841354
1018112008937
117754836430
1236158127a1
1319284ba169
14c3b6664c1
15710131277
hex4378f52e9

18112008937 has 8 divisors (see below), whose sum is σ = 19776481920. Its totient is φ = 16450523760.

The previous prime is 18112008917. The next prime is 18112008949. The reversal of 18112008937 is 73980021181.

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

It is not a de Polignac number, because 18112008937 - 27 = 18112008809 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 18112008937.

It is not an unprimeable number, because it can be changed into a prime (18112008917) 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, 734262 + ... + 758527.

It is an arithmetic number, because the mean of its divisors is an integer number (2472060240).

Almost surely, 218112008937 is an apocalyptic number.

It is an amenable number.

18112008937 is a deficient number, since it is larger than the sum of its proper divisors (1664472983).

18112008937 is a wasteful number, since it uses less digits than its factorization.

18112008937 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1493903.

The product of its (nonzero) digits is 24192, while the sum is 40.

The spelling of 18112008937 in words is "eighteen billion, one hundred twelve million, eight thousand, nine hundred thirty-seven".

Divisors: 1 11 1103 12133 1492789 16420679 1646546267 18112008937