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18714002993 = 75101524099
BaseRepresentation
bin10001011011011100…
…010000011000110001
31210022012200211222222
4101123130100120301
5301311241043433
612332550010425
71231515254330
oct213334203061
953265624888
1018714002993
117a33626484
123763346a15
1319c313356a
14c975abd17
15747de4b98
hex45b710631

18714002993 has 8 divisors (see below), whose sum is σ = 21391665600. Its totient is φ = 16037398800.

The previous prime is 18714002971. The next prime is 18714002999. The reversal of 18714002993 is 39920041781.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-18714002993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18714002999) 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, 226343 + ... + 297756.

It is an arithmetic number, because the mean of its divisors is an integer number (2673958200).

Almost surely, 218714002993 is an apocalyptic number.

It is an amenable number.

18714002993 is a deficient number, since it is larger than the sum of its proper divisors (2677662607).

18714002993 is an equidigital number, since it uses as much as digits as its factorization.

18714002993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 529207.

The product of its (nonzero) digits is 108864, while the sum is 44.

The spelling of 18714002993 in words is "eighteen billion, seven hundred fourteen million, two thousand, nine hundred ninety-three".

Divisors: 1 7 5101 35707 524099 3668693 2673428999 18714002993