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2153896239 = 311166939107
BaseRepresentation
bin1000000001100001…
…1101100100101111
312120002221021011210
42000120131210233
513402344134424
6553421245503
7104242546605
oct20030354457
95502837153
102153896239
11a05900140
12501403893
1328430b821
141660b9875
15c9161729
hex8061d92f

2153896239 has 16 divisors (see below), whose sum is σ = 3134897280. Its totient is φ = 1304576160.

The previous prime is 2153896223. The next prime is 2153896247. The reversal of 2153896239 is 9326983512.

It is not a de Polignac number, because 2153896239 - 24 = 2153896223 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2153896279) 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, 35524 + ... + 74630.

It is an arithmetic number, because the mean of its divisors is an integer number (195931080).

Almost surely, 22153896239 is an apocalyptic number.

2153896239 is a deficient number, since it is larger than the sum of its proper divisors (981001041).

2153896239 is a wasteful number, since it uses less digits than its factorization.

2153896239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40790.

The product of its digits is 699840, while the sum is 48.

The square root of 2153896239 is about 46410.0876857607. The cubic root of 2153896239 is about 1291.4420584121.

The spelling of 2153896239 in words is "two billion, one hundred fifty-three million, eight hundred ninety-six thousand, two hundred thirty-nine".

Divisors: 1 3 11 33 1669 5007 18359 39107 55077 117321 430177 1290531 65269583 195808749 717965413 2153896239