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13809362639 = 22393766089
BaseRepresentation
bin11001101110001101…
…00010011011001111
31022122101202022021112
430313012202123033
5211240144101024
610202142322235
7666131434322
oct146706423317
938571668245
1013809362639
1159470305a6
12281488937b
1313c0c822c7
149500507b9
1555c52800e
hex3371a26cf

13809362639 has 8 divisors (see below), whose sum is σ = 13886302080. Its totient is φ = 13732557696.

The previous prime is 13809362551. The next prime is 13809362647. The reversal of 13809362639 is 93626390831.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-13809362639 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13809362339) 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, 175907 + ... + 241995.

It is an arithmetic number, because the mean of its divisors is an integer number (1735787760).

Almost surely, 213809362639 is an apocalyptic number.

13809362639 is a deficient number, since it is larger than the sum of its proper divisors (76939441).

13809362639 is an equidigital number, since it uses as much as digits as its factorization.

13809362639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67249.

The product of its (nonzero) digits is 1259712, while the sum is 50.

The spelling of 13809362639 in words is "thirteen billion, eight hundred nine million, three hundred sixty-two thousand, six hundred thirty-nine".

Divisors: 1 223 937 66089 208951 14737847 61925393 13809362639