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130381679 = 791650401
BaseRepresentation
bin1111100010101…
…11011101101111
3100002100002001002
413301113131233
5231334203204
620534310515
73142140341
oct761273557
9302302032
10130381679
116766275a
12377b843b
132102042c
141345d291
15b6a691e
hex7c5776f

130381679 has 4 divisors (see below), whose sum is σ = 132032160. Its totient is φ = 128731200.

The previous prime is 130381661. The next prime is 130381697. The reversal of 130381679 is 976183031.

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

It is an interprime number because it is at equal distance from previous prime (130381661) and next prime (130381697).

It is a cyclic number.

It is not a de Polignac number, because 130381679 - 216 = 130316143 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 (130381639) 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 3 ways as a sum of consecutive naturals, for example, 825122 + ... + 825279.

It is an arithmetic number, because the mean of its divisors is an integer number (33008040).

Almost surely, 2130381679 is an apocalyptic number.

130381679 is a deficient number, since it is larger than the sum of its proper divisors (1650481).

130381679 is an equidigital number, since it uses as much as digits as its factorization.

130381679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1650480.

The product of its (nonzero) digits is 27216, while the sum is 38.

The square root of 130381679 is about 11418.4797149183. The cubic root of 130381679 is about 507.0749888757.

The spelling of 130381679 in words is "one hundred thirty million, three hundred eighty-one thousand, six hundred seventy-nine".

Divisors: 1 79 1650401 130381679