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2135384867 = 72113961753
BaseRepresentation
bin111111101000111…
…0110001100100011
312111211002210100102
41333101312030203
513333124303432
6551520413015
7103626320600
oct17721661443
95454083312
102135384867
119a6407290
124b717716b
13280529b55
1416385b6a7
15c7706962
hex7f476323

2135384867 has 12 divisors (see below), whose sum is σ = 2709839736. Its totient is φ = 1663935840.

The previous prime is 2135384861. The next prime is 2135384903. The reversal of 2135384867 is 7684835312.

It is not a de Polignac number, because 2135384867 - 24 = 2135384851 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2135384861) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1980338 + ... + 1981415.

It is an arithmetic number, because the mean of its divisors is an integer number (225819978).

Almost surely, 22135384867 is an apocalyptic number.

2135384867 is a deficient number, since it is larger than the sum of its proper divisors (574454869).

2135384867 is a wasteful number, since it uses less digits than its factorization.

2135384867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3961778 (or 3961771 counting only the distinct ones).

The product of its digits is 967680, while the sum is 47.

The square root of 2135384867 is about 46210.2247018990. The cubic root of 2135384867 is about 1287.7317001800.

The spelling of 2135384867 in words is "two billion, one hundred thirty-five million, three hundred eighty-four thousand, eight hundred sixty-seven".

Divisors: 1 7 11 49 77 539 3961753 27732271 43579283 194125897 305054981 2135384867