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18031915114 = 281111117087
BaseRepresentation
bin10000110010110010…
…010011000001101010
31201112200020012022221
4100302302103001222
5243412132240424
612141142304254
71205563515043
oct206262230152
951480205287
1018031915114
117713600794
1235b2a2808a
131914a26175
14c30b778ca
157080ae9e4
hex432c9306a

18031915114 has 8 divisors (see below), whose sum is σ = 27081226368. Its totient is φ = 9004839660.

The previous prime is 18031915073. The next prime is 18031915127. The reversal of 18031915114 is 41151913081.

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

It is a self number, because there is not a number n which added to its sum of digits gives 18031915114.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5556922 + ... + 5560165.

It is an arithmetic number, because the mean of its divisors is an integer number (3385153296).

Almost surely, 218031915114 is an apocalyptic number.

18031915114 is a deficient number, since it is larger than the sum of its proper divisors (9049311254).

18031915114 is a wasteful number, since it uses less digits than its factorization.

18031915114 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11117900.

The product of its (nonzero) digits is 4320, while the sum is 34.

The spelling of 18031915114 in words is "eighteen billion, thirty-one million, nine hundred fifteen thousand, one hundred fourteen".

Divisors: 1 2 811 1622 11117087 22234174 9015957557 18031915114