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38885538989 = 118834003453
BaseRepresentation
bin100100001101110000…
…100011110010101101
310201101000000001101202
4210031300203302231
51114114144221424
625510324015245
72544422425223
oct441560436255
9121330001352
1038885538989
1115544966a90
127652831525
13388920a68b
141c4c586b13
151028c462ae
hex90dc23cad

38885538989 has 8 divisors (see below), whose sum is σ = 42468640032. Its totient is φ = 35310446640.

The previous prime is 38885538977. The next prime is 38885539009. The reversal of 38885538989 is 98983558883.

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 38885538989 - 24 = 38885538973 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 (38885538959) by changing a digit.

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, 1992014 + ... + 2011439.

It is an arithmetic number, because the mean of its divisors is an integer number (5308580004).

Almost surely, 238885538989 is an apocalyptic number.

It is an amenable number.

38885538989 is a deficient number, since it is larger than the sum of its proper divisors (3583101043).

38885538989 is a wasteful number, since it uses less digits than its factorization.

38885538989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4004347.

The product of its digits is 597196800, while the sum is 74.

The spelling of 38885538989 in words is "thirty-eight billion, eight hundred eighty-five million, five hundred thirty-eight thousand, nine hundred eighty-nine".

Divisors: 1 11 883 9713 4003453 44037983 3535048999 38885538989