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18139590014 = 271399668077
BaseRepresentation
bin10000111001001101…
…000010110101111110
31201211011211122112012
4100321031002311332
5244122213340024
612155550211222
71211341654040
oct207115026576
951734748465
1018139590014
117769364507
123622ab3b12
131931126120
14c411a5a90
1571277d50e
hex439342d7e

18139590014 has 16 divisors (see below), whose sum is σ = 33488474208. Its totient is φ = 7176101472.

The previous prime is 18139589999. The next prime is 18139590017. The reversal of 18139590014 is 41009593181.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18139590017) 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, 49833857 + ... + 49834220.

It is an arithmetic number, because the mean of its divisors is an integer number (2093029638).

Almost surely, 218139590014 is an apocalyptic number.

18139590014 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

18139590014 is a deficient number, since it is larger than the sum of its proper divisors (15348884194).

18139590014 is a wasteful number, since it uses less digits than its factorization.

18139590014 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99668099.

The product of its (nonzero) digits is 38880, while the sum is 41.

The spelling of 18139590014 in words is "eighteen billion, one hundred thirty-nine million, five hundred ninety thousand, fourteen".

Divisors: 1 2 7 13 14 26 91 182 99668077 199336154 697676539 1295685001 1395353078 2591370002 9069795007 18139590014