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38871113197 = 719292264009
BaseRepresentation
bin100100001100111001…
…100001110111101101
310201022222212010221011
4210030321201313231
51114102001110242
625505050505221
72544156003430
oct441471416755
9121288763834
1038871113197
1115537803744
127649a35211
1338862294c7
141c4a6ad817
151027846d17
hex90ce61ded

38871113197 has 8 divisors (see below), whose sum is σ = 46762241600. Its totient is φ = 31564512864.

The previous prime is 38871113191. The next prime is 38871113263. The reversal of 38871113197 is 79131117883.

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 38871113197 - 27 = 38871113069 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 38871113197.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38871113191) 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, 146131872 + ... + 146132137.

It is an arithmetic number, because the mean of its divisors is an integer number (5845280200).

Almost surely, 238871113197 is an apocalyptic number.

It is an amenable number.

38871113197 is a deficient number, since it is larger than the sum of its proper divisors (7891128403).

38871113197 is a wasteful number, since it uses less digits than its factorization.

38871113197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 292264035.

The product of its digits is 254016, while the sum is 49.

The spelling of 38871113197 in words is "thirty-eight billion, eight hundred seventy-one million, one hundred thirteen thousand, one hundred ninety-seven".

Divisors: 1 7 19 133 292264009 2045848063 5553016171 38871113197