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18230398300 = 2252182303983
BaseRepresentation
bin10000111110100111…
…011100110101011100
31202001111201012002001
4100332213130311130
5244313440221200
612212552412044
71213523554162
oct207647346534
952044635061
1018230398300
117805648084
1236493a7024
131946b9bc3a
14c4d283232
1571a71976a
hex43e9dcd5c

18230398300 has 18 divisors (see below), whose sum is σ = 39559964528. Its totient is φ = 7292159280.

The previous prime is 18230398297. The next prime is 18230398327. The reversal of 18230398300 is 389303281.

It is a self number, because there is not a number n which added to its sum of digits gives 18230398300.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 91151892 + ... + 91152091.

Almost surely, 218230398300 is an apocalyptic number.

18230398300 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18230398300 is an abundant number, since it is smaller than the sum of its proper divisors (21329566228).

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

18230398300 is a wasteful number, since it uses less digits than its factorization.

18230398300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182303997 (or 182303990 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 37.

The spelling of 18230398300 in words is "eighteen billion, two hundred thirty million, three hundred ninety-eight thousand, three hundred".

Divisors: 1 2 4 5 10 20 25 50 100 182303983 364607966 729215932 911519915 1823039830 3646079660 4557599575 9115199150 18230398300