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2019968998 = 21338175479
BaseRepresentation
bin111100001100110…
…0100011111100110
312012202221001112121
41320121210133212
513114103001443
6532234540154
7101025311305
oct17031443746
95182831477
102019968998
11947246673
1248459765a
13262649638
141523b643c
15bc5094ed
hex786647e6

2019968998 has 8 divisors (see below), whose sum is σ = 3030220080. Its totient is φ = 1009895640.

The previous prime is 2019968927. The next prime is 2019968999. The reversal of 2019968998 is 8998699102.

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

It is a super-2 number, since 2×20199689982 = 8160549505762248008, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2019968999) 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 3 ways as a sum of consecutive naturals, for example, 10978 + ... + 64501.

It is an arithmetic number, because the mean of its divisors is an integer number (378777510).

Almost surely, 22019968998 is an apocalyptic number.

2019968998 is a deficient number, since it is larger than the sum of its proper divisors (1010251082).

2019968998 is a wasteful number, since it uses less digits than its factorization.

2019968998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88862.

The product of its (nonzero) digits is 5038848, while the sum is 61.

The square root of 2019968998 is about 44944.0652144418. The cubic root of 2019968998 is about 1264.1003978597.

The spelling of 2019968998 in words is "two billion, nineteen million, nine hundred sixty-eight thousand, nine hundred ninety-eight".

Divisors: 1 2 13381 26762 75479 150958 1009984499 2019968998