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18984960000 = 2153254103
BaseRepresentation
bin10001101011100101…
…111000000000000000
31211000002112220010200
4101223211320000000
5302340122210000
612415505325200
71241315332416
oct215345700000
954002486120
1018984960000
118062573496
12381a036800
131a37302b56
14cc15812b6
15761ab8500
hex46b978000

18984960000 has 480 divisors, whose sum is σ = 69199192920. Its totient is φ = 5013504000.

The previous prime is 18984959951. The next prime is 18984960061. The reversal of 18984960000 is 6948981.

It is a tau number, because it is divible by the number of its divisors (480).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 184319949 + ... + 184320051.

Almost surely, 218984960000 is an apocalyptic number.

18984960000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18984960000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34599596460).

18984960000 is an abundant number, since it is smaller than the sum of its proper divisors (50214232920).

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

18984960000 is an frugal number, since it uses more digits than its factorization.

18984960000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159 (or 113 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 45.

The spelling of 18984960000 in words is "eighteen billion, nine hundred eighty-four million, nine hundred sixty thousand".