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38819194895 = 513597218383
BaseRepresentation
bin100100001001110011…
…011110100000001111
310201012101011102102002
4210021303132200033
51114000203214040
625455554022515
72542655466215
oct441163364017
9121171142362
1038819194895
1115510472758
127634577a3b
13387854bc10
141c43836cb5
151022edda15
hex909cde80f

38819194895 has 8 divisors (see below), whose sum is σ = 50166344256. Its totient is φ = 28666482336.

The previous prime is 38819194853. The next prime is 38819194903. The reversal of 38819194895 is 59849191883.

It is a happy number.

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 38819194895 - 222 = 38815000591 is a prime.

It is a super-2 number, since 2×388191948952 (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (65), and also a Moran number because the ratio is a prime number: 597218383 = 38819194895 / (3 + 8 + 8 + 1 + 9 + 1 + 9 + 4 + 8 + 9 + 5).

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 298609127 + ... + 298609256.

It is an arithmetic number, because the mean of its divisors is an integer number (6270793032).

Almost surely, 238819194895 is an apocalyptic number.

38819194895 is a deficient number, since it is larger than the sum of its proper divisors (11347149361).

38819194895 is a wasteful number, since it uses less digits than its factorization.

38819194895 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 597218401.

The product of its digits is 22394880, while the sum is 65.

The spelling of 38819194895 in words is "thirty-eight billion, eight hundred nineteen million, one hundred ninety-four thousand, eight hundred ninety-five".

Divisors: 1 5 13 65 597218383 2986091915 7763838979 38819194895