Search a number
-
+
2868219813 = 3956073271
BaseRepresentation
bin1010101011110101…
…1000111110100101
321101220001122220110
42222331120332211
521333231013223
61152335523233
7131035315614
oct25275307645
97356048813
102868219813
111242042aa8
12680689519
133692c46b4
141d2d0187b
1511bc12d93
hexaaf58fa5

2868219813 has 4 divisors (see below), whose sum is σ = 3824293088. Its totient is φ = 1912146540.

The previous prime is 2868219769. The next prime is 2868219829. The reversal of 2868219813 is 3189128682.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 2868219813 - 26 = 2868219749 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 (2868219863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 478036633 + ... + 478036638.

It is an arithmetic number, because the mean of its divisors is an integer number (956073272).

Almost surely, 22868219813 is an apocalyptic number.

It is an amenable number.

2868219813 is a deficient number, since it is larger than the sum of its proper divisors (956073275).

2868219813 is an equidigital number, since it uses as much as digits as its factorization.

2868219813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 956073274.

The product of its digits is 331776, while the sum is 48.

The square root of 2868219813 is about 53555.7635833904. The cubic root of 2868219813 is about 1420.8148158664.

The spelling of 2868219813 in words is "two billion, eight hundred sixty-eight million, two hundred nineteen thousand, eight hundred thirteen".

Divisors: 1 3 956073271 2868219813