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2130198269 = 17531215173
BaseRepresentation
bin111111011111000…
…0011111011111101
312111110100021200012
41332332003323331
513330312321034
6551213313005
7103534246403
oct17676037375
95443307605
102130198269
119a3494541
124b5495765
1327c432164
14162cab473
15c702ecce
hex7ef83efd

2130198269 has 4 divisors (see below), whose sum is σ = 2131415196. Its totient is φ = 2128981344.

The previous prime is 2130198251. The next prime is 2130198289. The reversal of 2130198269 is 9628910312.

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

It can be written as a sum of positive squares in 2 ways, for example, as 51294244 + 2078904025 = 7162^2 + 45595^2 .

It is a cyclic number.

It is not a de Polignac number, because 2130198269 - 212 = 2130194173 is a prime.

It is a super-2 number, since 2×21301982692 = 9075489330501192722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2130198289) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 605834 + ... + 609339.

It is an arithmetic number, because the mean of its divisors is an integer number (532853799).

Almost surely, 22130198269 is an apocalyptic number.

It is an amenable number.

2130198269 is a deficient number, since it is larger than the sum of its proper divisors (1216927).

2130198269 is a wasteful number, since it uses less digits than its factorization.

2130198269 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1216926.

The product of its (nonzero) digits is 46656, while the sum is 41.

The square root of 2130198269 is about 46154.0709905421. The cubic root of 2130198269 is about 1286.6882721262.

The spelling of 2130198269 in words is "two billion, one hundred thirty million, one hundred ninety-eight thousand, two hundred sixty-nine".

Divisors: 1 1753 1215173 2130198269