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2162105153 = 13166315781
BaseRepresentation
bin1000000011011111…
…0001101101000001
312120200101022200122
42000313301231001
513411444331103
6554313230025
7104402406365
oct20067615501
95520338618
102162105153
11a0a4a766a
12504102315
13285c24080
141672152a5
15c9c33b38
hex80df1b41

2162105153 has 4 divisors (see below), whose sum is σ = 2328420948. Its totient is φ = 1995789360.

The previous prime is 2162105129. The next prime is 2162105159. The reversal of 2162105153 is 3515012612.

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 548636929 + 1613468224 = 23423^2 + 40168^2 .

It is a cyclic number.

It is not a de Polignac number, because 2162105153 - 212 = 2162101057 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2162105159) 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, 83157878 + ... + 83157903.

It is an arithmetic number, because the mean of its divisors is an integer number (582105237).

Almost surely, 22162105153 is an apocalyptic number.

It is an amenable number.

2162105153 is a deficient number, since it is larger than the sum of its proper divisors (166315795).

2162105153 is a wasteful number, since it uses less digits than its factorization.

2162105153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166315794.

The product of its (nonzero) digits is 1800, while the sum is 26.

The square root of 2162105153 is about 46498.4424792917. The cubic root of 2162105153 is about 1293.0806234665.

Adding to 2162105153 its reverse (3515012612), we get a palindrome (5677117765).

The spelling of 2162105153 in words is "two billion, one hundred sixty-two million, one hundred five thousand, one hundred fifty-three".

Divisors: 1 13 166315781 2162105153