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18793858904 = 2317138190139
BaseRepresentation
bin10001100000001100…
…111000011101011000
31210111202221221201022
4101200030320131120
5301442211441104
612344521342012
71233505110362
oct214014703530
953452857638
1018793858904
117a747093a7
123786037908
131a06843192
14ca4037d32
1574ee1abbe
hex460338758

18793858904 has 16 divisors (see below), whose sum is σ = 37311337800. Its totient is φ = 8844168832.

The previous prime is 18793858891. The next prime is 18793858913. The reversal of 18793858904 is 40985839781.

It is a congruent number.

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, 69094934 + ... + 69095205.

Almost surely, 218793858904 is an apocalyptic number.

It is an amenable number.

18793858904 is a deficient number, since it is larger than the sum of its proper divisors (18517478896).

18793858904 is a wasteful number, since it uses less digits than its factorization.

18793858904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138190162 (or 138190158 counting only the distinct ones).

The product of its (nonzero) digits is 17418240, while the sum is 62.

The spelling of 18793858904 in words is "eighteen billion, seven hundred ninety-three million, eight hundred fifty-eight thousand, nine hundred four".

Divisors: 1 2 4 8 17 34 68 136 138190139 276380278 552760556 1105521112 2349232363 4698464726 9396929452 18793858904