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13949186079 = 34649728693
BaseRepresentation
bin11001111110110111…
…11011000000011111
31100000010212001222110
430333123323000133
5212031442423304
610224055245103
71002450060663
oct147733730037
940003761873
1013949186079
115a08a51a64
122853679793
131413c2a17a
1496484a8a3
15569947289
hex33f6fb01f

13949186079 has 4 divisors (see below), whose sum is σ = 18598914776. Its totient is φ = 9299457384.

The previous prime is 13949186057. The next prime is 13949186081. The reversal of 13949186079 is 97068194931.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 13949186079 - 28 = 13949185823 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 (13949186029) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2324864344 + ... + 2324864349.

It is an arithmetic number, because the mean of its divisors is an integer number (4649728694).

Almost surely, 213949186079 is an apocalyptic number.

13949186079 is a deficient number, since it is larger than the sum of its proper divisors (4649728697).

13949186079 is an equidigital number, since it uses as much as digits as its factorization.

13949186079 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4649728696.

The product of its (nonzero) digits is 2939328, while the sum is 57.

It can be divided in two parts, 13949 and 186079, that added together give a triangular number (200028 = T632).

The spelling of 13949186079 in words is "thirteen billion, nine hundred forty-nine million, one hundred eighty-six thousand, seventy-nine".

Divisors: 1 3 4649728693 13949186079