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38819442479 = 891492927339
BaseRepresentation
bin100100001001110100…
…011010111100101111
310201012101122000000212
4210021310122330233
51114000234124404
625500003213035
72542660550066
oct441164327457
9121171560025
1038819442479
1115510621774
12763467717b
13387860780c
141c4389d1dd
15102303c06e
hex909d1af2f

38819442479 has 8 divisors (see below), whose sum is σ = 39519090000. Its totient is φ = 38125650112.

The previous prime is 38819442463. The next prime is 38819442499. The reversal of 38819442479 is 97424491883.

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 38819442479 - 24 = 38819442463 is a prime.

It is a super-2 number, since 2×388194424792 (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 (38819442419) 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, 1450409 + ... + 1476930.

It is an arithmetic number, because the mean of its divisors is an integer number (4939886250).

Almost surely, 238819442479 is an apocalyptic number.

38819442479 is a deficient number, since it is larger than the sum of its proper divisors (699647521).

38819442479 is a wasteful number, since it uses less digits than its factorization.

38819442479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2927577.

The product of its digits is 13934592, while the sum is 59.

The spelling of 38819442479 in words is "thirty-eight billion, eight hundred nineteen million, four hundred forty-two thousand, four hundred seventy-nine".

Divisors: 1 89 149 13261 2927339 260533171 436173511 38819442479