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18030958100 = 2252237839547
BaseRepresentation
bin10000110010101110…
…101001011000010100
31201112121102120112222
4100302232221120110
5243411411124400
612141110001512
71205552420651
oct206256513024
951477376488
1018030958100
117713007771
1235b2646298
13191477c69c
14c309a8c28
15707e71185
hex432ba9614

18030958100 has 36 divisors (see below), whose sum is σ = 40828365984. Its totient is φ = 6898800480.

The previous prime is 18030958069. The next prime is 18030958109. The reversal of 18030958100 is 185903081.

It is a super-2 number, since 2×180309581002 (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18030958109) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3917474 + ... + 3922073.

Almost surely, 218030958100 is an apocalyptic number.

18030958100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18030958100 is an abundant number, since it is smaller than the sum of its proper divisors (22797407884).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18030958100 is a wasteful number, since it uses less digits than its factorization.

18030958100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7839584 (or 7839577 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 35.

The spelling of 18030958100 in words is "eighteen billion, thirty million, nine hundred fifty-eight thousand, one hundred".

Divisors: 1 2 4 5 10 20 23 25 46 50 92 100 115 230 460 575 1150 2300 7839547 15679094 31358188 39197735 78395470 156790940 180309581 195988675 360619162 391977350 721238324 783954700 901547905 1803095810 3606191620 4507739525 9015479050 18030958100