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2131889358 = 23355314893
BaseRepresentation
bin111111100010010…
…0000110011001110
312111120112012102010
41333010200303032
513331230424413
6551313442050
7103554521604
oct17704406316
95446465363
102131889358
119a443a035
124b5b70326
1327c8a4ac1
141631cb874
15c7265dc3
hex7f120cce

2131889358 has 8 divisors (see below), whose sum is σ = 4263778728. Its totient is φ = 710629784.

The previous prime is 2131889329. The next prime is 2131889359. The reversal of 2131889358 is 8539881312.

It is a sphenic number, since it is the product of 3 distinct primes.

2131889358 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2131889359) 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, 177657441 + ... + 177657452.

It is an arithmetic number, because the mean of its divisors is an integer number (532972341).

Almost surely, 22131889358 is an apocalyptic number.

2131889358 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

2131889358 is a wasteful number, since it uses less digits than its factorization.

2131889358 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 355314898.

The product of its digits is 414720, while the sum is 48.

The square root of 2131889358 is about 46172.3873976644. The cubic root of 2131889358 is about 1287.0286674903.

The spelling of 2131889358 in words is "two billion, one hundred thirty-one million, eight hundred eighty-nine thousand, three hundred fifty-eight".

Divisors: 1 2 3 6 355314893 710629786 1065944679 2131889358