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4438943131 = 71993318181
BaseRepresentation
bin1000010001001010…
…01110010110011011
3102110100122200020011
410020211032112123
533042332140011
62012245542351
7215000252110
oct41045162633
912410580204
104438943131
111978738747
12a3a7149b7
1355984978c
14301774907
151aea7c621
hex10894e59b

4438943131 has 8 divisors (see below), whose sum is σ = 5075639264. Its totient is φ = 3802887360.

The previous prime is 4438943107. The next prime is 4438943143. The reversal of 4438943131 is 1313498344.

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 4438943131 - 215 = 4438910363 is a prime.

It is a super-2 number, since 2×44389431312 = 39408432240504166322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4438943101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 145140 + ... + 173041.

It is an arithmetic number, because the mean of its divisors is an integer number (634454908).

Almost surely, 24438943131 is an apocalyptic number.

4438943131 is a deficient number, since it is larger than the sum of its proper divisors (636696133).

4438943131 is a wasteful number, since it uses less digits than its factorization.

4438943131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 320181.

The product of its digits is 124416, while the sum is 40.

The square root of 4438943131 is about 66625.3940401106. The cubic root of 4438943131 is about 1643.4627325177.

The spelling of 4438943131 in words is "four billion, four hundred thirty-eight million, nine hundred forty-three thousand, one hundred thirty-one".

Divisors: 1 7 1993 13951 318181 2227267 634134733 4438943131