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18900575000 = 2355756023
BaseRepresentation
bin10001100110100011…
…111110001100011000
31210210012202200200022
4101212203332030120
5302202021400000
612403252530012
71236242144126
oct214643761430
953705680608
1018900575000
11801997781a
1237b5920908
131a229988b8
14cb4296916
1575949a585
hex4668fe318

18900575000 has 48 divisors (see below), whose sum is σ = 44295446160. Its totient is φ = 7560220000.

The previous prime is 18900574999. The next prime is 18900575003. The reversal of 18900575000 is 57500981.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18900575003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 353012 + ... + 403011.

It is an arithmetic number, because the mean of its divisors is an integer number (922821795).

Almost surely, 218900575000 is an apocalyptic number.

18900575000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18900575000 is an abundant number, since it is smaller than the sum of its proper divisors (25394871160).

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

18900575000 is an frugal number, since it uses more digits than its factorization.

18900575000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 756054 (or 756030 counting only the distinct ones).

The product of its (nonzero) digits is 12600, while the sum is 35.

The spelling of 18900575000 in words is "eighteen billion, nine hundred million, five hundred seventy-five thousand".

Divisors: 1 2 4 5 8 10 20 25 40 50 100 125 200 250 500 625 1000 1250 2500 3125 5000 6250 12500 25000 756023 1512046 3024092 3780115 6048184 7560230 15120460 18900575 30240920 37801150 75602300 94502875 151204600 189005750 378011500 472514375 756023000 945028750 1890057500 2362571875 3780115000 4725143750 9450287500 18900575000