Search a number
-
+
2180070813 = 31201605071
BaseRepresentation
bin1000000111110001…
…0011110110011101
312121221012001221110
42001330103312131
513431044231223
61000154252233
7105011203404
oct20174236635
95557161843
102180070813
11a19658518
1250a127079
1328987453b
1416977063b
15cb5d1d93
hex81f13d9d

2180070813 has 8 divisors (see below), whose sum is σ = 2909186176. Its totient is φ = 1452168000.

The previous prime is 2180070799. The next prime is 2180070863. The reversal of 2180070813 is 3180700812.

It is a happy number.

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

It is not a de Polignac number, because 2180070813 - 26 = 2180070749 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2180070863) 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 7 ways as a sum of consecutive naturals, for example, 298933 + ... + 306138.

It is an arithmetic number, because the mean of its divisors is an integer number (363648272).

Almost surely, 22180070813 is an apocalyptic number.

It is an amenable number.

2180070813 is a deficient number, since it is larger than the sum of its proper divisors (729115363).

2180070813 is a wasteful number, since it uses less digits than its factorization.

2180070813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 606275.

The product of its (nonzero) digits is 2688, while the sum is 30.

The square root of 2180070813 is about 46691.2284374699. The cubic root of 2180070813 is about 1296.6522964009.

The spelling of 2180070813 in words is "two billion, one hundred eighty million, seventy thousand, eight hundred thirteen".

Divisors: 1 3 1201 3603 605071 1815213 726690271 2180070813