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2009988893 = 11523349381
BaseRepresentation
bin111011111001101…
…1111111100011101
312012002011000102002
41313303133330131
513104024121033
6531241012045
7100544423633
oct16763377435
95162130362
102009988893
1194164a450
12481184025
13260563b53
14150d39353
15bb6d73e8
hex77cdff1d

2009988893 has 8 divisors (see below), whose sum is σ = 2196914016. Its totient is φ = 1823763600.

The previous prime is 2009988859. The next prime is 2009988919. The reversal of 2009988893 is 3988899002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2009988893 - 224 = 1993211677 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2009988293) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 168938 + ... + 180443.

It is an arithmetic number, because the mean of its divisors is an integer number (274614252).

Almost surely, 22009988893 is an apocalyptic number.

It is an amenable number.

2009988893 is a deficient number, since it is larger than the sum of its proper divisors (186925123).

2009988893 is a wasteful number, since it uses less digits than its factorization.

2009988893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 349915.

The product of its (nonzero) digits is 2239488, while the sum is 56.

The square root of 2009988893 is about 44832.8996720043. The cubic root of 2009988893 is about 1262.0151036340.

The spelling of 2009988893 in words is "two billion, nine million, nine hundred eighty-eight thousand, eight hundred ninety-three".

Divisors: 1 11 523 5753 349381 3843191 182726263 2009988893