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38415395149 = 277701197837
BaseRepresentation
bin100011110001101111…
…000110100101001101
310200011020100021021221
4203301233012211031
51112133320121044
625351531123341
72526653320405
oct436157064515
9120136307257
1038415395149
1115323541a5a
1275412a3551
1338129a9c61
141c05d63805
15eec829484
hex8f1bc694d

38415395149 has 8 divisors (see below), whose sum is σ = 38609272728. Its totient is φ = 38221915200.

The previous prime is 38415395141. The next prime is 38415395167. The reversal of 38415395149 is 94159351483.

It can be written as a sum of positive squares in 4 ways, for example, as 3130402500 + 35284992649 = 55950^2 + 187843^2 .

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 38415395149 - 23 = 38415395141 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 38415395096 and 38415395105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38415395141) 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, 95259 + ... + 293095.

It is an arithmetic number, because the mean of its divisors is an integer number (4826159091).

Almost surely, 238415395149 is an apocalyptic number.

It is an amenable number.

38415395149 is a deficient number, since it is larger than the sum of its proper divisors (193877579).

38415395149 is a wasteful number, since it uses less digits than its factorization.

38415395149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198815.

The product of its digits is 2332800, while the sum is 52.

The spelling of 38415395149 in words is "thirty-eight billion, four hundred fifteen million, three hundred ninety-five thousand, one hundred forty-nine".

Divisors: 1 277 701 194177 197837 54800849 138683737 38415395149