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38679203769 = 312893067923
BaseRepresentation
bin100100000001011101…
…011100111110111001
310200211121202010200120
4210001131130332321
51113203334010034
625434033323453
72536335543633
oct440135347671
9120747663616
1038679203769
1115449447308
1275b5706589
13385554592b
141c2cdd5a53
151015a89c49
hex90175cfb9

38679203769 has 4 divisors (see below), whose sum is σ = 51572271696. Its totient is φ = 25786135844.

The previous prime is 38679203747. The next prime is 38679203779. The reversal of 38679203769 is 96730297683.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 38679203769 - 25 = 38679203737 is a prime.

It is a super-2 number, since 2×386792037692 (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (38679203729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6446533959 + ... + 6446533964.

It is an arithmetic number, because the mean of its divisors is an integer number (12893067924).

Almost surely, 238679203769 is an apocalyptic number.

It is an amenable number.

38679203769 is a deficient number, since it is larger than the sum of its proper divisors (12893067927).

38679203769 is a wasteful number, since it uses less digits than its factorization.

38679203769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12893067926.

The product of its (nonzero) digits is 20575296, while the sum is 60.

The spelling of 38679203769 in words is "thirty-eight billion, six hundred seventy-nine million, two hundred three thousand, seven hundred sixty-nine".

Divisors: 1 3 12893067923 38679203769