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38931193085 = 547231648579
BaseRepresentation
bin100100010000011110…
…101101110011111101
310201111011220112001012
4210100132231303331
51114212341134320
625515034325005
72545515452441
oct442036556375
9121434815035
1038931193085
1115568709644
127665b89765
133895803935
141c5466c821
15102cc634c5
hex9107adcfd

38931193085 has 8 divisors (see below), whose sum is σ = 46727351520. Its totient is φ = 31138341264.

The previous prime is 38931193039. The next prime is 38931193099. The reversal of 38931193085 is 58039113983.

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 38931193085 - 216 = 38931127549 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 800675 + ... + 847904.

It is an arithmetic number, because the mean of its divisors is an integer number (5840918940).

Almost surely, 238931193085 is an apocalyptic number.

It is an amenable number.

38931193085 is a deficient number, since it is larger than the sum of its proper divisors (7796158435).

38931193085 is a wasteful number, since it uses less digits than its factorization.

38931193085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1653307.

The product of its (nonzero) digits is 699840, while the sum is 50.

The spelling of 38931193085 in words is "thirty-eight billion, nine hundred thirty-one million, one hundred ninety-three thousand, eighty-five".

Divisors: 1 5 4723 23615 1648579 8242895 7786238617 38931193085