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538898893 = 1341453761
BaseRepresentation
bin100000000111101…
…111000111001101
31101120000220022021
4200013233013031
52100424231033
6125250250141
716232364541
oct4007570715
91346026267
10538898893
11257215795
12130586951
13878546b0
14517dda21
153249db2d
hex201ef1cd

538898893 has 4 divisors (see below), whose sum is σ = 580352668. Its totient is φ = 497445120.

The previous prime is 538898891. The next prime is 538898903. The reversal of 538898893 is 398898835.

538898893 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 65966884 + 472932009 = 8122^2 + 21747^2 .

It is a cyclic number.

It is not a de Polignac number, because 538898893 - 21 = 538898891 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (538898891) 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, 20726868 + ... + 20726893.

It is an arithmetic number, because the mean of its divisors is an integer number (145088167).

Almost surely, 2538898893 is an apocalyptic number.

It is an amenable number.

538898893 is a deficient number, since it is larger than the sum of its proper divisors (41453775).

538898893 is a wasteful number, since it uses less digits than its factorization.

538898893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41453774.

The product of its digits is 14929920, while the sum is 61.

The square root of 538898893 is about 23214.1959369693. The cubic root of 538898893 is about 813.7714149671.

The spelling of 538898893 in words is "five hundred thirty-eight million, eight hundred ninety-eight thousand, eight hundred ninety-three".

Divisors: 1 13 41453761 538898893