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130861709 = 11411791621
BaseRepresentation
bin1111100110011…
…00101010001101
3100010020110111222
413303030222031
5232000033314
620552453125
73146210006
oct763145215
9303213458
10130861709
1167960380
12379aa1a5
132115aa84
14135461ad
15b74dc8e
hex7ccca8d

130861709 has 16 divisors (see below), whose sum is σ = 147147840. Its totient is φ = 115344000.

The previous prime is 130861691. The next prime is 130861723. The reversal of 130861709 is 907168031.

It is a cyclic number.

It is not a de Polignac number, because 130861709 - 220 = 129813133 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130861739) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 79919 + ... + 81539.

It is an arithmetic number, because the mean of its divisors is an integer number (9196740).

Almost surely, 2130861709 is an apocalyptic number.

It is an amenable number.

130861709 is a deficient number, since it is larger than the sum of its proper divisors (16286131).

130861709 is a wasteful number, since it uses less digits than its factorization.

130861709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1852.

The product of its (nonzero) digits is 9072, while the sum is 35.

The square root of 130861709 is about 11439.4802766559. The cubic root of 130861709 is about 507.6965309348.

The spelling of 130861709 in words is "one hundred thirty million, eight hundred sixty-one thousand, seven hundred nine".

Divisors: 1 11 41 179 451 1621 1969 7339 17831 66461 80729 290159 731071 3191749 11896519 130861709