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38317934869 = 1731973112261
BaseRepresentation
bin100011101011111011…
…010100100100010101
310122220102221202220221
4203223323110210111
51111433342403434
625334130154341
72524361033554
oct435373244425
9118812852827
1038317934869
1115283525675
1275147229b1
1337c8745456
141bd7033d9b
15ee3ec72b4
hex8ebed4915

38317934869 has 8 divisors (see below), whose sum is σ = 38559302712. Its totient is φ = 38076795840.

The previous prime is 38317934849. The next prime is 38317934909. The reversal of 38317934869 is 96843971383.

It can be written as a sum of positive squares in 4 ways, for example, as 21853708900 + 16464225969 = 147830^2 + 128313^2 .

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 38317934869 - 233 = 29728000277 is a prime.

It is a super-2 number, since 2×383179348692 (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38317934819) 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 7 ways as a sum of consecutive naturals, for example, 285199 + ... + 397459.

It is an arithmetic number, because the mean of its divisors is an integer number (4819912839).

Almost surely, 238317934869 is an apocalyptic number.

It is an amenable number.

38317934869 is a deficient number, since it is larger than the sum of its proper divisors (241367843).

38317934869 is a wasteful number, since it uses less digits than its factorization.

38317934869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114407.

The product of its digits is 23514624, while the sum is 61.

The spelling of 38317934869 in words is "thirty-eight billion, three hundred seventeen million, nine hundred thirty-four thousand, eight hundred sixty-nine".

Divisors: 1 173 1973 112261 341329 19421153 221490953 38317934869