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2163193180 = 225108159659
BaseRepresentation
bin1000000011101111…
…1011010101011100
312120202102121011221
42000323323111130
513412234140210
6554352423124
7104414560441
oct20073732534
95522377157
102163193180
11a10080065
12504547aa4
13286215385
141674199c8
15c9d9b1da
hex80efb55c

2163193180 has 12 divisors (see below), whose sum is σ = 4542705720. Its totient is φ = 865277264.

The previous prime is 2163193177. The next prime is 2163193183. The reversal of 2163193180 is 813913612.

It is an interprime number because it is at equal distance from previous prime (2163193177) and next prime (2163193183).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2163193183) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54079810 + ... + 54079849.

It is an arithmetic number, because the mean of its divisors is an integer number (378558810).

Almost surely, 22163193180 is an apocalyptic number.

2163193180 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2163193180 is an abundant number, since it is smaller than the sum of its proper divisors (2379512540).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2163193180 is a wasteful number, since it uses less digits than its factorization.

2163193180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108159668 (or 108159666 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 34.

The square root of 2163193180 is about 46510.1406147090. The cubic root of 2163193180 is about 1293.2974909175.

The spelling of 2163193180 in words is "two billion, one hundred sixty-three million, one hundred ninety-three thousand, one hundred eighty".

Divisors: 1 2 4 5 10 20 108159659 216319318 432638636 540798295 1081596590 2163193180