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38649699167 = 199323218191
BaseRepresentation
bin100011111111101100…
…111001101101011111
310200202120020010222112
4203333230321231133
51113123310333132
625431101104235
72535530010452
oct437754715537
9120676203875
1038649699167
1115433825042
1275a785807b
13384c3b52a1
141c29115499
1510131acab2
hex8ffb39b5f

38649699167 has 8 divisors (see below), whose sum is σ = 40688444160. Its totient is φ = 36611409240.

The previous prime is 38649699157. The next prime is 38649699233. The reversal of 38649699167 is 76199694683.

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 38649699167 - 226 = 38582590303 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 38649699097 and 38649699106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38649699157) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68042 + ... + 286232.

It is an arithmetic number, because the mean of its divisors is an integer number (5086055520).

Almost surely, 238649699167 is an apocalyptic number.

38649699167 is a deficient number, since it is larger than the sum of its proper divisors (2038744993).

38649699167 is a wasteful number, since it uses less digits than its factorization.

38649699167 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227533.

The product of its digits is 105815808, while the sum is 68.

The spelling of 38649699167 in words is "thirty-eight billion, six hundred forty-nine million, six hundred ninety-nine thousand, one hundred sixty-seven".

Divisors: 1 19 9323 177137 218191 4145629 2034194693 38649699167