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38689758839 = 1714999115413
BaseRepresentation
bin100100000010000101…
…101101111001110111
310200212100121101112002
4210002011231321313
51113214034240324
625435051445515
72536524344504
oct440205557167
9120770541462
1038689758839
11154543a6506
1275b915689b
1338577a0034
141c305824ab
1510169723ae
hex90216de77

38689758839 has 16 divisors (see below), whose sum is σ = 41284857600. Its totient is φ = 36130659840.

The previous prime is 38689758803. The next prime is 38689758841. The reversal of 38689758839 is 93885798683.

38689758839 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 38689758839 - 212 = 38689754743 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 (38689758739) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2502497 + ... + 2517909.

It is an arithmetic number, because the mean of its divisors is an integer number (2580303600).

Almost surely, 238689758839 is an apocalyptic number.

38689758839 is a deficient number, since it is larger than the sum of its proper divisors (2595098761).

38689758839 is a wasteful number, since it uses less digits than its factorization.

38689758839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16570.

The product of its digits is 627056640, while the sum is 74.

The spelling of 38689758839 in words is "thirty-eight billion, six hundred eighty-nine million, seven hundred fifty-eight thousand, eight hundred thirty-nine".

Divisors: 1 17 149 991 2533 15413 16847 147659 262021 2296537 2510203 15274283 39041129 259662811 2275868167 38689758839